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Mosandl CF, Baltes-Flückiger L, Kronschnabel J, Meyer M, Guessoum A, Herrmann O, Vogel M, Walter M, Pichler EM. Cannabis use and its association with psychopathological symptoms in a Swiss adult population: a cross-sectional analysis. Front Public Health 2024; 12:1356988. [PMID: 38841675 PMCID: PMC11151851 DOI: 10.3389/fpubh.2024.1356988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 05/10/2024] [Indexed: 06/07/2024] Open
Abstract
Background As the most commonly used illicit substance, cannabis is gaining global acceptance through increasing legalization efforts. This shift intensifies the need for research to guide policymakers and healthcare providers in harm reduction and treatment strategies. Nonetheless, the relationship between psychopathological symptoms and cannabis use remains inadequately understood. Methods A sample of regular cannabis consumers completed self-reported assessments for depression (Patient Health Questionnaire-9), anxiety (General Anxiety Disorder-7), Attention-Deficit/Hyperactivity Disorder (ADHD; Adult ADHD Self-Report Scale V1.1), and psychosis (Early Recognition Inventory based on IRAOS) as well as previous black-market cannabis use patterns. Cannabis Use Disorder Identification Test Revised (CUDIT-R) was used to identify cannabis use disorder (CUD). To understand psychopathological symptom load related to cannabis consumption as well as cannabis use motives, multiple regression models were performed to identify psychopathological variables predicting cannabis use frequency and quantity. Linear regression and correlation analyses were conducted, adjusting for relevant covariates (age, gender, education, alcohol, other substance use). Results Three-hundred-sixty regular cannabis users interested in a study on regulated cannabis access in Basel, Switzerland were examined. In bivariate analysis, cannabis use frequency correlated with depressive (r(358) = 0.16, p = 0.003) and anxiety symptom load (r(358) = 0.11, p = 0.034). Cannabis quantity correlated with depressive (r(358) = 0.15, p = 0.005), ADHD (r(358) = 0.14, p = 0.008), and psychosis symptom load (r(358) = 0.16, p = 0.002). However, in the adjusted regression models only depressive and ADHD symptom loads were significantly associated with cannabis use frequency (p = 0.006 and p = 0.034, respectively) and quantity (p = 0.037 and p = 0.019, respectively). No significant correlations between cannabis consumption and anxiety or psychosis remained after adjustment. Conclusion ADHD and depressive symptoms correlate with increased cannabis use in a cohort of regular users, suggesting potential self-medication in nonclinical populations. With the rising availability of cannabis worldwide, these results highlight the necessity for longitudinal studies to disentangle the complex dynamics between cannabis consumption and mental health symptoms.
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Affiliation(s)
- Christoph Felix Mosandl
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | | | - Jens Kronschnabel
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
| | - Maximilian Meyer
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Adrian Guessoum
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Oliver Herrmann
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Marc Vogel
- Department of Addictive Disorders, University Psychiatric Clinics Basel, Basel, Switzerland
| | - Marc Walter
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
| | - Eva-Maria Pichler
- Clinic of Psychiatry and Psychotherapy, Psychiatric Services Aargau, Windisch, Switzerland
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Laliberte MM, Belisario K, Lucibello KM, Potechin MB, Potter S, Brassard S, Punia K, MacKillop J, Balodis I. Changing cannabis legislation in Canada and a longitudinal look at "regular" cannabis use in patients with eating disorders. Psychiatry Res 2024; 337:115933. [PMID: 38759416 DOI: 10.1016/j.psychres.2024.115933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 04/25/2024] [Accepted: 04/26/2024] [Indexed: 05/19/2024]
Abstract
Regular cannabis use (CU), defined as "weekly or more often", is associated with a number of negative mental health outcomes. In the last decade, Canada legalized first medical and then recreational CU. Despite higher prevalence in mental health populations, little research has documented changes in frequency of CU with progressive legalization of cannabis. This study examined rates of CU in a sample of 843 treatment-seeking patients with eating disorders (ED) in an outpatient setting between 2004 and 2020. Across ED diagnoses, segmented regression indicated a significant break-point in regular CU in 2014, commensurate with the relaxation of medical cannabis laws. Regular CU increased from 4.9 % to 23.7 % from 2014 to 2020; well above the stable 6 % found in the general population. No significant break-point was observed in either alcohol or illicit substance use over the same time period. Significant increases in regular CU were found in patients with anorexia nervosa and binge eating disorder, while regular use remained stable in patients with bulimia nervosa. Comorbid psychiatric diagnoses did not increase odds of regular CU. Findings suggest certain patient groups with mental illness may be at risk of engaging in high frequency use in the context of legislation implying medical benefits of cannabis.
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Affiliation(s)
- Michele M Laliberte
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada; Eating Disorders Clinic, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychology, Neuroscience, & Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - Kyla Belisario
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Kristen M Lucibello
- Department of Health Sciences, Brock University, St. Catharines, Ontario, Canada
| | | | - Sarah Potter
- Eating Disorders Clinic, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychology, Neuroscience, & Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - Sarah Brassard
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada
| | - Kiran Punia
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychology, Neuroscience, & Behaviour, McMaster University, Hamilton, Ontario, Canada
| | - James MacKillop
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, Hamilton, Ontario, Canada
| | - Iris Balodis
- Peter Boris Centre for Addictions Research, St. Joseph's Healthcare Hamilton, Hamilton, Ontario, Canada; Department of Psychiatry and Behavioural Neurosciences, McMaster University, Hamilton, Ontario, Canada; Michael G. DeGroote Centre for Medicinal Cannabis Research, Hamilton, Ontario, Canada.
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3
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Igwe JK, Alaribe U. Cannabis use associated with lower mortality among hospitalized Covid-19 patients using the national inpatient sample: an epidemiological study. J Cannabis Res 2024; 6:18. [PMID: 38582889 PMCID: PMC10998318 DOI: 10.1186/s42238-024-00228-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 03/20/2024] [Indexed: 04/08/2024] Open
Abstract
BACKGROUND Prior reports indicate that modulation of the endocannabinoid system (ECS) may have a protective benefit for Covid-19 patients. However, associations between cannabis use (CU) or CU not in remission (active cannabis use (ACU)), and Covid-19-related outcomes among hospitalized patients is unknown. METHODS In this multicenter retrospective observational cohort analysis of adults (≥ 18 years-old) identified from 2020 National Inpatient Sample database, we utilize multivariable regression analyses and propensity score matching analysis (PSM) to analyze trends and outcomes among Covid-19-related hospitalizations with CU and without CU (N-CU) for primary outcome of interest: Covid-19-related mortality; and secondary outcomes: Covid-19-related hospitalization, mechanical ventilation (MV), and acute pulmonary embolism (PE) compared to all-cause admissions; for CU vs N-CU; and for ACU vs N-ACU. RESULTS There were 1,698,560 Covid-19-related hospitalizations which were associated with higher mortality (13.44% vs 2.53%, p ≤ 0.001) and worse secondary outcomes generally. Among all-cause hospitalizations, 1.56% of CU and 6.29% of N-CU were hospitalized with Covid-19 (p ≤ 0.001). ACU was associated with lower odds of MV, PE, and death among the Covid-19 population. On PSM, ACU(N(unweighted) = 2,382) was associated with 83.97% lower odds of death compared to others(N(unweighted) = 282,085) (2.77% vs 3.95%, respectively; aOR:0.16, [0.10-0.25], p ≤ 0.001). CONCLUSIONS These findings suggest that the ECS may represent a viable target for modulation of Covid-19. Additional studies are needed to further explore these findings.
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Affiliation(s)
- Joseph-Kevin Igwe
- Department of Medicine, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Ugo Alaribe
- Caribbean Medical University School of Medicine, 5600 N River Rd Suite 800, Rosemont, IL, 60018, USA
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Conner BT, Thompson K, Prince MA, Bolts OL, Contreras A, Riggs NR, Leadbeater BJ. Results of a randomized controlled trial of the cannabis eCHECKUP TO GO personalized normative feedback intervention on reducing cannabis use, cannabis consequences, and descriptive norms. JOURNAL OF SUBSTANCE USE AND ADDICTION TREATMENT 2024; 159:209267. [PMID: 38103837 DOI: 10.1016/j.josat.2023.209267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/01/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
BACKGROUND The prevalence of cannabis use disorder and its negative consequences among young adults has highlighted the need for prevention and early intervention programs. However, low treatment prevalence persists due to factors such as lack of perceived need, concerns about stigma, and limited access to treatment. To address these barriers, web-based cannabis interventions have been developed, but their efficacy remain limited. This study aims to evaluate the cross-site efficacy of the Cannabis eCHECKUP TO GO program, a web-based Personalized Normative Feedback and Protective Behavioral Strategies intervention for reducing cannabis use frequency and consequences in college students with willingness to change. METHODS Participants were 781 students from three universities (two in Canada, one in the US) who reported using cannabis in the past month and expressed interest in reducing or engaging in safer cannabis use. The study randomly assigned them to either an experimental group that received personalized normative feedback or a control group that received information on healthy stress management. The study collected follow-up data 4 weeks after the initial intervention and measured participants' frequency of cannabis use, number of cannabis consequences, descriptive and injunctive norms at both time points. RESULTS The results showed no significant reductions in cannabis use or negative consequences of use. However, students who received personalized normative feedback experienced a significant reduction in descriptive norms related to cannabis use, to be more in line with actual use. CONCLUSION This study suggests that more targeted interventions may be necessary for university students who are already using and seeking help to reduce their use.
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Affiliation(s)
- Bradley T Conner
- Department of Psychology, Colorado State University, United States of America.
| | - Kara Thompson
- Department of Psychology, Francis Xavier University, Antogonish, NS, Canada
| | - Mark A Prince
- Department of Psychology, Colorado State University, United States of America
| | - Olivia L Bolts
- Department of Psychology, Colorado State University, United States of America
| | | | - Nathaniel R Riggs
- Department of Human Development and Family Studies, CSU Prevention Research, United States of America
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5
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Mauro PM, Gutkind S, Askari MS, Hasin DS, Samples H, Mauro CM, Annunziato EM, Boustead AE, Martins SS. Associations between cannabis policies and state-level specialty cannabis use disorder treatment in the United States, 2004-2019. Drug Alcohol Depend 2024; 257:111113. [PMID: 38382162 DOI: 10.1016/j.drugalcdep.2024.111113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/23/2024]
Abstract
BACKGROUND Cannabis use disorder (CUD) treatment prevalence decreased in the US between 2002 and 2019, yet structural mechanisms for this decrease are poorly understood. We tested associations between cannabis laws becoming effective and self-reported CUD treatment. METHODS Restricted-use 2004-2019 National Surveys on Drug Use and Health included people ages 12+ classified as needing CUD treatment (i.e., past-year DSM-5-proxy CUD or last/current specialty treatment for cannabis). Time-varying indicators of medical cannabis laws (MCL) with/without cannabis dispensary provisions differentiated state-years before/after laws using effective dates. Multi-level logistic regressions with random state intercepts estimated individual- and state-adjusted CUD treatment odds by MCLs and model-based changes in specialty CUD treatment state-level prevalence. Secondary analyses tested associations between CUD treatment and MCL or recreational cannabis laws (RCL). RESULTS Using a broad treatment need sample definition in 2004-2014, specialty CUD treatment prevalence decreased by 1.35 (95 % CI = -2.51, -0.18) points after MCL without dispensaries and by 2.15 points (95 % CI = -3.29, -1.00) after MCL with dispensaries provisions became effective, compared to before MCL. Among people with CUD in 2004-2014, specialty treatment decreased only in MCL states with dispensary provisions (aPD = -0.91, 95 % CI = -1.68, -0.13). MCL were not associated with CUD treatment use in 2015-2019. RCL were associated with lower CUD treatment among people classified as needing CUD treatment, but not among people with past-year CUD. CONCLUSIONS Policy-related reductions in specialty CUD treatment were concentrated in states with cannabis dispensary provisions in 2004-2014, but not 2015-2019, and partly driven by reductions among people without past-year CUD. Other mechanisms (e.g., CUD symptom identification, criminal-legal referrals) could contribute to decreasing treatment trends.
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Affiliation(s)
- Pia M Mauro
- Department of Epidemiology, Columbia University Mailman School of Public Health, United States.
| | - Sarah Gutkind
- Department of Epidemiology, Columbia University Mailman School of Public Health, United States
| | - Melanie S Askari
- Department of Epidemiology, Columbia University Mailman School of Public Health, United States
| | - Deborah S Hasin
- Department of Epidemiology, Columbia University Mailman School of Public Health, United States; New York State Psychiatric Institute, United States
| | - Hillary Samples
- Center for Pharmacoepidemiology and Treatment Science, Rutgers Institute for Health, Health Care Policy and Aging Research, United States; Department of Health Behavior, Society & Policy, Rutgers University School of Public Health, United States
| | - Christine M Mauro
- Department of Biostatistics, Columbia University Mailman School of Public Health, United States
| | - Erin M Annunziato
- Department of Epidemiology, Columbia University Mailman School of Public Health, United States
| | - Anne E Boustead
- School of Government & Public Policy, University of Arizona, United States
| | - Silvia S Martins
- Department of Epidemiology, Columbia University Mailman School of Public Health, United States
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6
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Hall W, Manthey J, Stjepanović D. Cannabis use and cannabis use disorders and their treatment in the Europe. Eur Arch Psychiatry Clin Neurosci 2024:10.1007/s00406-024-01776-1. [PMID: 38489067 DOI: 10.1007/s00406-024-01776-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 02/02/2024] [Indexed: 03/17/2024]
Abstract
This paper introduces the special issue on cannabis use in Europe. It describes data on the prevalence of cannabis use in Europe and the more limited data on the prevalence of cannabis use disorders, one of the most common forms of drug problem treated in many countries in Europe. It summarises what research has indicated about the adverse effects of acute and chronic cannabis use and discusses potential health system responses that may reduce some of these harms. These include public education about the risks of cannabis use; screening and brief interventions in primary medical settings; and specialist treatment for cannabis use disorders. It briefly indicates the special issues that may need to be addressed in dealing with the high rates of comorbidity between cannabis use disorders, other types of drug use disorders, and common mental disorders.
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Affiliation(s)
- Wayne Hall
- The National Centre for Youth Substance Use Research, The University of Queensland, St Lucia, Australia.
| | - Jakob Manthey
- Institute of Clinical Psychology and Psychotherapy, Technical University Dresden, Dresden, Germany
| | - Daniel Stjepanović
- The National Centre for Youth Substance Use Research, The University of Queensland, St Lucia, Australia
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7
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Morris PE, Vargo LA, Buckner JD. Social Anxiety and Cannabis-Related Problems: The Serial Roles of Distress Tolerance and Cannabis Use Motives. Subst Use Misuse 2024; 59:1133-1140. [PMID: 38403969 PMCID: PMC11025634 DOI: 10.1080/10826084.2024.2320400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Background: Individuals with elevated social anxiety are vulnerable to experiencing negative consequences related to cannabis use. One transdiagnostic vulnerability factor that has received little attention in the social anxiety-cannabis problem relation is distress tolerance, which is associated with more cannabis use to manage negative affect broadly (i.e., coping motives) and cannabis-related problems. However, it is unknown whether distress tolerance is related to greater cannabis use to manage social anxiety specifically (i.e., social anxiety motives). Objectives: This study tested whether the relation between social anxiety and cannabis problems occurred via perceived distress tolerance among 309 (77.3% female) undergraduates who endorsed current (past three-month) cannabis use. Results: Social anxiety was negatively associated with distress tolerance and positively associated with cannabis problems, coping, and social anxiety motives. Social anxiety was indirectly (via distress tolerance) related to more cannabis problems and motives to cope with negative affect generally and to cope with social anxiety specifically. Social anxiety was indirectly related to more cannabis problems via the serial effects of distress tolerance and coping and social anxiety motives. Conclusions: Findings suggest that individuals with elevated social anxiety may be vulnerable to using cannabis to manage negative affect (generally and social anxiety specifically) due to low perceived ability to tolerate psychological distress, which may lead to more cannabis problems. Keywords: cannabis; marijuana; distress tolerance; social anxiety; motives; coping motives.
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Affiliation(s)
- Paige E. Morris
- Louisiana State University, Department of Psychology, 236 Audubon Hall, Baton Rouge, LA 70803, USA
| | - Luke A. Vargo
- Louisiana State University, Department of Psychology, 236 Audubon Hall, Baton Rouge, LA 70803, USA
| | - Julia D. Buckner
- Louisiana State University, Department of Psychology, 236 Audubon Hall, Baton Rouge, LA 70803, USA
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8
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Mitchell MM, G Mitchell S, Brooks JH, Akinwolere OG, Dusek K, O'Grady KE, Schwartz RP, Gryczynski J. The Relationship between Vaping Cannabis and Frequency of Cannabis Use and Cannabis-Related Problems among Urban High School Students. Subst Use Misuse 2024; 59:329-335. [PMID: 38063201 DOI: 10.1080/10826084.2023.2269573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
Background: Vaping, including vaping cannabis, is increasing among adolescents. In this longitudinal study, we examined the relationship between vaping cannabis and frequency of cannabis use and related problems over 6 months among adolescents. Material and Methods: Data were from 233 participants (46.8% male, 93.1% African American, mean age = 16.4 years) reporting cannabis use. The Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) assessed frequency of past 30-day cannabis use and cannabis-related problems at baseline, 3- and 6-months post-baseline. We used latent growth curve modeling to compare vaping to non-vaping adolescents on trends in cannabis use frequency and ASSIST cannabis scores. Results: Adolescents who vaped cannabis (11.7%) had higher past 30-day frequency (mean = 17.89 days, SD = 10.49) of cannabis use at baseline compared to adolescents who had not vaped (mean = 12.1 days, SD = 10.93), but reported a significantly sharper decline in frequency of cannabis use (b = -0.34, p = 0.017). A significantly steeper decrease existed in the mean cannabis ASSIST scores for the vaping group than for the non-vaping group (b = -0.34, p = 0.014). Mean ASSIST scores on the cannabis subscale between the two groups were significantly different at 6-month follow-up (Vape mean = 6.00, SD = 8.12 vs. Non-vape mean = 9.6, SD = 9.39; p < 0.021). Conclusions: In a sample of cannabis-using adolescents, adolescents with experience vaping cannabis, compared to adolescents without vaping experience, on average reported sharper decreases in frequency of cannabis use and cannabis-related problems such as health or social problems.
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Affiliation(s)
| | | | | | | | - Kristi Dusek
- Friends Research Institute, Baltimore, Maryland, USA
| | - Kevin E O'Grady
- Department of Psychology, University of Maryland, College Park, Maryland, USA
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9
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Sahlem GL, Kim B, Baker NL, Wong BL, Caruso MA, Campbell LA, Kaloani I, Sherman BJ, Ford TJ, Musleh AH, Kim JP, Williams NR, Manett AJ, Kratter IH, Short EB, Killeen TK, George MS, McRae-Clark AL. A preliminary randomized controlled trial of repetitive transcranial magnetic stimulation applied to the left dorsolateral prefrontal cortex in treatment seeking participants with cannabis use disorder. Drug Alcohol Depend 2024; 254:111035. [PMID: 38043228 PMCID: PMC10837319 DOI: 10.1016/j.drugalcdep.2023.111035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/12/2023] [Accepted: 11/14/2023] [Indexed: 12/05/2023]
Abstract
BACKGROUND Cannabis use disorder (CUD) is a common and consequential disorder. When applied to the dorsolateral prefrontal cortex (DLPFC), repetitive transcranial magnetic stimulation (rTMS) reduces craving across substance use disorders and may have therapeutic clinical effects when applied in serial-sessions. The present study sought to preliminarily determine whether serial-sessions of rTMS applied to the DLPFC had a therapeutic effect in CUD. METHODS This study was a two-site, phase-2, double-blind, randomized-controlled-trial. Seventy-two treatment-seeking participants (37.5% Women, mean age 30.2±9.9SD) with ≥moderate-CUD were randomized to active or sham rTMS (Beam-F3, 10Hz, 20-total-sessions, two-sessions-per-visit, two-visits-per-week, with cannabis cues) while undergoing a three-session motivational enhancement therapy intervention. The primary outcome was the change in craving between pre- and post- treatment (Marijuana Craving Questionnaire Short-Form-MCQ-SF). Secondary outcomes included the number of weeks of abstinence and the number of days-per-week of cannabis use during 4-weeks of follow-up. RESULTS There were no significant differences in craving between conditions. Participants who received active-rTMS reported numerically, but not significantly, more weeks of abstinence in the follow-up period than those who received sham-rTMS (15.5%-Active; 9.3%-Sham; rate ratio = 1.66 [95% CI: 0.84, 3.28]; p=0.14). Participants who received active-rTMS reported fewer days-per-week of cannabis use over the final two-weeks of the follow-up period than those receiving sham-rTMS (Active vs. Sham: -0.72; Z=-2.33, p=0.02). CONCLUSIONS This trial suggests rTMS is safe and feasible in individuals with CUD and may have a therapeutic effect on frequency of cannabis use, though further study is needed with additional rTMS-sessions and a longer follow-up period.
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Affiliation(s)
- Gregory L Sahlem
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA.
| | - Bohye Kim
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Nathaniel L Baker
- Departments of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Brendan L Wong
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Margaret A Caruso
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - Lauren A Campbell
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - Irakli Kaloani
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Brian J Sherman
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - Tiffany J Ford
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Ahmad H Musleh
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Jane P Kim
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Nolan R Williams
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Andrew J Manett
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - Ian H Kratter
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA
| | - Edward B Short
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - Terese K Killeen
- Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - Mark S George
- Departments of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA; Ralph H. Johnson Veterans Administration Medical Center, Charleston, SC, USA
| | - Aimee L McRae-Clark
- Departments of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA; Ralph H. Johnson Veterans Administration Medical Center, Charleston, SC, USA
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Kurtzman ET, Barnow BS. The impact of recreational cannabis laws on cannabis use disorder during "treat and release" visits to hospital emergency departments in four U.S. states, 2017-2020. Prev Med Rep 2023; 36:102492. [PMID: 38021411 PMCID: PMC10652101 DOI: 10.1016/j.pmedr.2023.102492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 12/01/2023] Open
Abstract
States' legalization of cannabis influences cannabis use and may increase cannabis use disorder (CUD)-a problematic pattern of use leading to significant impairment. Few studies have examined the influence of recreational cannabis legalization on CUD in the emergency department (ED). We used four years of data from the State Emergency Department Databases (SEDD) (2017-2020) from three states (CO, MD, OR) and three years of SEDD from Rhode Island (2017-2019) to examine the relationship between the recreational legalization of cannabis and CUD among "treat and release" ED visits. During the study period, CO and OR were legal for recreational cannabis while it was illegal in MD and RI. We examined the proportion of ED visits for CUD and used multivariate logistic regression to examine the association between recreational legalization and CUD diagnosis. The sample had 17,434,655 ED visits (56.2 % female). The proportion of ED visits for CUD was 0.63 %. Annual rates ranged from 0.67 % (2017) to 0.59 % (2019) and state-level rates were 0.39 % (CO), 0.35 % (OR), 1.03 % (MD), and 0.79 % (RI). Compared to ED visits in legal states, a higher proportion of ED visits in non-legal states were from women (56.8 % versus 55.7 %) and Blacks (40.9 % versus 5.9 %). Compared to states where recreational cannabis was illegal, legalizing cannabis for recreational use was associated with nearly a 50 % decrease in the adjusted odds of CUD (AOR = 0.49, 95 % CI 0.47, 0.52). In summary, CUD rates among "treat and release" ED visits were significantly lower in legalized states than in non-legal states.
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Affiliation(s)
- Ellen T. Kurtzman
- Edward J. Bloustein School of Planning and Public Policy, Rutgers University, The State University of New Jersey, 33 Livingston Street, #249, New Brunswick, NJ 08901, United States
| | - Burt S. Barnow
- Trachtenberg School of Public Policy and Public Administration, The George Washington University, 805 21 Street, NW, 6th Floor, Washington, DC 20052, United States
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11
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Scott JC. Impact of Adolescent Cannabis Use on Neurocognitive and Brain Development. Psychiatr Clin North Am 2023; 46:655-676. [PMID: 37879830 DOI: 10.1016/j.psc.2023.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Research examining associations between frequent cannabis use in adolescence and brain-behavior outcomes has increased substantially over the past 2 decades. This review attempts to synthesize the state of evidence in this area of research while acknowledging challenges in interpretation. Although there is converging evidence that ongoing, frequent cannabis use in adolescence is associated with small reductions in cognitive functioning, there is still significant debate regarding the persistence of reductions after a period of abstinence. Similarly, there is controversy regarding the replicability of structural and functional neuroimaging findings related to frequent cannabis use in adolescence. Larger studies with informative designs are needed.
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Affiliation(s)
- J Cobb Scott
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, 3700 Hamilton Walk, 5th Floor, Philadelphia, PA 19104, USA; VISN4 Mental Illness Research, Education, and Clinical Center at the Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA 19104, USA.
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Bosley HG, Peña JM, Penn AD, Sorensen JL, Tierney M, Flentje A. A Pragmatic, Person-Centered View of Cannabis in the United States: Pursuing Care That Transcends Beliefs. Subst Abus 2023; 44:337-347. [PMID: 37902034 DOI: 10.1177/08897077231202836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
BACKGROUND Rates of cannabis use are increasing in the United States, likely as a result of changes in societal attitudes and expanding legalization. Although many patients report wanting to discuss the risks and benefits of cannabis use with their clinical providers, many providers hold conflicting beliefs regarding cannabis use and often do not engage patients in discussion about cannabis. This dilemma is underscored by the limitations imposed on cannabis related research, and lack of empirically based best-practice guidelines for clinicians when addressing cannabis use with patients. OBJECTIVES We aimed to briefly summarize clinician and patient attitudes toward cannabis use and review current clinical guidelines and provide suggestions to assist health care providers and clinicians in increasing their comfort and skill in discussing cannabis use with patients. METHODS A narrative review on attitudes toward cannabis use and clinical guidelines was performed to summarize the literature and provide evidence-based recommendations. RESULTS Attitudes toward cannabis use have been shaped by personal and political factors and contribute to clinician hesitance in speaking with patients about the topic. Administrative barriers have hindered the development of clearer public health guidelines that might enable the dissemination of evidence-based information on the health effects of cannabis use and might ultimately lead to better health outcomes. CONCLUSION Not discussing cannabis use with patients may be a crucial missed opportunity for harm reduction. In the absence of empirically supported best-practice guidelines, a person-centered approach can facilitate conversations on the harms and benefits of cannabis use.
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Affiliation(s)
- Hannah G Bosley
- University of California, San Francisco, CA, USA
- Berkeley Therapy Institute, Berkeley, CA, USA
| | - Juan M Peña
- University of California, San Francisco, CA, USA
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Bahji A, Socias ME, Bach P, Milloy M. Implications of Cannabis Legalization on Substance-Related Benefits and Harms for People Who Use Opioids: A Canadian Perspective. Cannabis Cannabinoid Res 2023; 8:699-702. [PMID: 37001172 PMCID: PMC10623062 DOI: 10.1089/can.2023.0031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
In 2018, Canada enacted the Cannabis Act, becoming only the second country (after Uruguay) to legalize the recreational consumption of cannabis. Although there is ongoing global disagreement on the risk-benefit profile of cannabis with increasing legalization in many parts of the world, the evidence of rising cannabis use prevalence postlegalization has been consistent. In contrast, postlegalization changes in various cannabis-related metrics have been inconsistent in Canada and other parts of the world. Furthermore, the implications of cannabis legalization on substance-related harms and benefits for people who use unregulated drugs, particularly opioids, remain unclear. Finally, although Canada did not legalize cannabis to address the opioid crisis, there is rising scientific and popular interest in the therapeutic potential of cannabis to mitigate opioid-related harms. This perspective highlights the implications of cannabis legalization on substance-related benefits and harms for people who use opioids, the current state of Canadian research, and suggestions for future directions.
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Affiliation(s)
- Anees Bahji
- Department of Psychiatry, University of Calgary, Calgary, Canada
- Department of Community Health Sciences, University of Calgary, Calgary, Canada
- Hotchkiss Brain Institute, University of Calgary, Calgary, Canada
- British Columbia Centre on Substance Use, Vancouver, Canada
| | - M. Eugenia Socias
- British Columbia Centre on Substance Use, Vancouver, Canada
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - Paxton Bach
- British Columbia Centre on Substance Use, Vancouver, Canada
- Department of Medicine, University of British Columbia, Vancouver, Canada
| | - M.J. Milloy
- British Columbia Centre on Substance Use, Vancouver, Canada
- Department of Medicine, University of British Columbia, Vancouver, Canada
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Matson TE, Williams EC, Lapham GT, Oliver M, Hallgren KA, Bradley KA. Association between cannabis use disorder symptom severity and probability of clinically-documented diagnosis and treatment in a primary care sample. Drug Alcohol Depend 2023; 251:110946. [PMID: 37688980 PMCID: PMC10655701 DOI: 10.1016/j.drugalcdep.2023.110946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 08/01/2023] [Accepted: 08/13/2023] [Indexed: 09/11/2023]
Abstract
BACKGROUND Brief cannabis screening followed by standardized assessment of symptoms may support diagnosis and treatment of cannabis use disorder (CUD). This study tested whether the probability of a medical provider diagnosing and treating CUD increased with the number of substance use disorder (SUD) symptoms documented in patients' EHRs. METHODS This observational study used EHR and claims data from an integrated healthcare system. Adult patients were included who reported daily cannabis use and completed the Substance Use Symptom Checklist, a scaled measure of DSM-5 SUD symptoms (0-11), during routine care 3/1/2015-3/1/2021. Logistic regression estimated associations between SUD symptom counts and: 1) CUD diagnosis; 2) CUD treatment initiation; and 3) CUD treatment engagement, defined based on Healthcare Effectiveness Data and Information Set (HEDIS) ICD-codes and timelines. We tested moderation across age, gender, race, and ethnicity. RESULTS Patients (N=13,947) were predominantly middle-age, male, White, and non-Hispanic. Among patients reporting daily cannabis use without other drug use (N=12,568), the probability of CUD diagnosis, treatment initiation, and engagement increased with each 1-unit increase in Symptom Checklist score (p's<0.001). However, probabilities of diagnosis, treatment, and engagement were low, even among those reporting ≥2 symptoms consistent with SUD: 14.0% diagnosed (95% CI: 11.7-21.6), 16.6% initiated treatment among diagnosed (11.7-21.6), and 24.3% engaged in treatment among initiated (15.8-32.7). Only gender moderated associations between Symptom Checklist and diagnosis (p=0.047) and treatment initiation (p=0.012). Findings were similar for patients reporting daily cannabis use with other drug use (N=1379). CONCLUSION Despite documented symptoms, CUD was underdiagnosed and undertreated in medical settings.
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Affiliation(s)
- Theresa E Matson
- Kaiser Permanente Washington Health Research Institute, Seattle, WA 98101, USA; Department of Health Systems and Population Health, University of Washington School of Public Health, Seattle, WA 98195, USA; Health Services Research & Development (HSR&D) Center for Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, Seattle, WA 98101, USA.
| | - Emily C Williams
- Kaiser Permanente Washington Health Research Institute, Seattle, WA 98101, USA; Department of Health Systems and Population Health, University of Washington School of Public Health, Seattle, WA 98195, USA; Health Services Research & Development (HSR&D) Center for Innovation for Veteran-Centered and Value-Driven Care, Veterans Affairs (VA) Puget Sound Health Care System, Seattle, WA 98101, USA
| | - Gwen T Lapham
- Kaiser Permanente Washington Health Research Institute, Seattle, WA 98101, USA; Department of Health Systems and Population Health, University of Washington School of Public Health, Seattle, WA 98195, USA
| | - Malia Oliver
- Kaiser Permanente Washington Health Research Institute, Seattle, WA 98101, USA
| | - Kevin A Hallgren
- Kaiser Permanente Washington Health Research Institute, Seattle, WA 98101, USA; Department of Health Systems and Population Health, University of Washington School of Public Health, Seattle, WA 98195, USA; Department of Psychiatry and Behavioral Sciences, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Katharine A Bradley
- Kaiser Permanente Washington Health Research Institute, Seattle, WA 98101, USA; Department of Health Systems and Population Health, University of Washington School of Public Health, Seattle, WA 98195, USA; Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
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Sahlem GL, Kim B, Baker NL, Wong BL, Caruso MA, Campbell LA, Kaloani I, Sherman BJ, Ford TJ, Musleh AH, Kim JP, Williams NR, Manett AJ, Kratter IH, Short EB, Killeen TK, George MS, McRae-Clark AL. A Preliminary Investigation Of Repetitive Transcranial Magnetic Stimulation Applied To The Left Dorsolateral Prefrontal Cortex In Treatment Seeking Participants With Cannabis Use Disorder. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.07.10.23292461. [PMID: 37503294 PMCID: PMC10370231 DOI: 10.1101/2023.07.10.23292461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Background Cannabis use disorder (CUD) is a common and consequential disorder. When applied to the dorsolateral prefrontal cortex (DLPFC), repetitive transcranial magnetic stimulation (rTMS) reduces craving across substance use disorders and may have a therapeutic clinical effect when applied in serial sessions. The present study sought to preliminarily determine whether serial sessions of rTMS applied to the DLPFC had a therapeutic effect in CUD. Methods This study was a two-site, phase-2, double-blind, randomized-controlled-trial. Seventy-two treatment-seeking participants (37.5% Women, mean age 30.2±9.9SD) with ≥moderate-CUD were randomized to active or sham rTMS (Beam-F3, 10Hz, 20-total-sessions, with cannabis cues) while undergoing a three-session motivational enhancement therapy intervention. The primary outcome was the change in craving between pre- and post-treatment (Marijuana Craving Questionnaire Short-Form-MCQ-SF). Secondary outcomes included the number of weeks of abstinence and the number of days-per-week of cannabis use during 4-weeks of follow-up. Results There were no significant differences in craving between conditions. Participants who received active rTMS reported numerically, but not significantly, more weeks of abstinence in the follow-up period than those who received sham rTMS (15.5%-Active; 9.3%-Sham; rate ratio = 1.66 [95% CI: 0.84, 3.28]; p=0.14). Participants who received active rTMS reported fewer days-per-week of cannabis use over the final two-weeks of the follow-up period (Active vs. Sham: -0.72; Z=-2.33, p=0.02). Conclusions This trial suggests rTMS is safe and feasible in individuals with CUD and may have a therapeutic effect on frequency of cannabis use, though further study is needed with additional rTMS-sessions and a longer follow-up period.
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Affiliation(s)
- Gregory L. Sahlem
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Bohye Kim
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Nathaniel L. Baker
- Departments of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Brendan L. Wong
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Margaret A. Caruso
- Departments of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Lauren A. Campbell
- Departments of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Irakli Kaloani
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Brian J. Sherman
- Departments of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Tiffany J. Ford
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Ahmad H. Musleh
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Jane P. Kim
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Nolan R. Williams
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Andrew J. Manett
- Departments of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Ian H. Kratter
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, California, USA
| | - Edward B. Short
- Departments of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Terese K. Killeen
- Departments of Psychiatry, Medical University of South Carolina, Charleston, South Carolina, USA
| | - Mark S. George
- Departments of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
- Ralph H. Johnson Veterans Administration Medical Center, Charleston, South Carolina, USA
| | - Aimee L. McRae-Clark
- Departments of Public Health Sciences, Medical University of South Carolina, Charleston, South Carolina, USA
- Ralph H. Johnson Veterans Administration Medical Center, Charleston, South Carolina, USA
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16
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Hanna MN, Speed TJ. The Pharming of Cannabis: Have We Not Learned the Lesson from the Overuse of Opioids? PAIN MEDICINE (MALDEN, MASS.) 2023; 24:910-911. [PMID: 36373966 DOI: 10.1093/pm/pnac165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 10/21/2022] [Indexed: 07/20/2023]
Affiliation(s)
- Marie N Hanna
- Department of Anesthesia and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Traci J Speed
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Yeap ZJS, Marsault J, George TP, Mizrahi R, Rabin RA. Does tobacco dependence worsen cannabis withdrawal in people with and without schizophrenia-spectrum disorders? Am J Addict 2023; 32:367-375. [PMID: 36815595 DOI: 10.1111/ajad.13394] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 01/30/2023] [Accepted: 02/08/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Rates of cannabis use disorder (CUD) are higher in people with schizophrenia than in the general population. Irrespective of psychiatric diagnosis, tobacco co-use is prevalent in those with CUD and leads to poor cannabis cessation outcomes. The cannabis withdrawal syndrome is well-established and increases cannabis relapse risk. We investigated whether cannabis withdrawal severity differed as a function of high versus no/low tobacco dependence and psychiatric diagnosis in individuals with CUD. METHOD Men with CUD (N = 55) were parsed into four groups according to schizophrenia diagnosis and tobacco dependence severity using the Fagerstrom Test for Nicotine Dependence (FTND): men with schizophrenia with high tobacco dependence (SCT+, n = 13; FTND ≥ 5) and no/low tobacco dependence (SCT-, n = 22; FTND ≤ 4), and nonpsychiatric controls with high (CCT+, n = 7; FTND ≥ 5) and no/low (CCT-, n = 13; FTND ≤ 4) tobacco dependence. Participants completed the Marijuana Withdrawal Checklist following 12-h of cannabis abstinence. RESULTS There was a significant main effect of tobacco dependence on cannabis withdrawal severity (p < .001). Individuals with high tobacco dependence had significantly greater cannabis withdrawal severity (M = 13.85 [6.8]) compared to individuals with no/low tobacco dependence (M = 6.49, [4.9]). Psychiatric diagnosis and the interaction effects were not significant. Lastly, cannabis withdrawal severity positively correlated with FTND (r = .41, p = .002). CONCLUSION AND SCIENTIFIC SIGNIFICANCE Among individuals with CUD and high tobacco dependence, cannabis withdrawal severity was elevated twofold, irrespective of diagnosis, relative to individuals with CUD and no/low tobacco dependence. Findings from this study emphasize the importance of addressing tobacco co-use when treating CUD.
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Affiliation(s)
- Zac J S Yeap
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada
- Douglas Mental Health University Institute, Verdun, Quebec, Canada
| | - Justine Marsault
- Integrated Program in Neuroscience, McGill University, Montreal, Quebec, Canada
- Douglas Mental Health University Institute, Verdun, Quebec, Canada
| | - Tony P George
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Centre for Complex Interventions and Addictions Division, Centre for Addiction and Mental Health (CAMH), Toronto, Ontario, Canada
| | - Romina Mizrahi
- Douglas Mental Health University Institute, Verdun, Quebec, Canada
- Department of Psychiatry, McGill University, Montreal, Quebec, Canada
| | - Rachel A Rabin
- Douglas Mental Health University Institute, Verdun, Quebec, Canada
- Department of Psychiatry, McGill University, Montreal, Quebec, Canada
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Lathrop JR, Rosen SN, Heitkemper MM, Buchanan DT. Cyclic Vomiting Syndrome and Cannabis Hyperemesis Syndrome: The State of the Science. Gastroenterol Nurs 2023; 46:208-224. [PMID: 37074964 DOI: 10.1097/sga.0000000000000730] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 10/10/2022] [Indexed: 04/20/2023] Open
Abstract
This article provides a narrative review of the state of the science for both cyclic vomiting syndrome and cannabis hyperemesis syndrome along with a discussion of the relationship between these 2 conditions. The scope of this review includes the historical context of these conditions as well as the prevalence, diagnostic criteria, pathogenesis, and treatment strategies for both conditions. A synopsis of the endocannabinoid system provides a basis for the hypothesis that a lack of cannabidiol in modern high-potency Δ 9 -tetrahydrocannabinol cannabis may be contributory to cannabis hyperemesis syndrome and possibly other cannabis use disorders. In concluding assessment, though the publications addressing both adult cyclic vomiting syndrome and cannabis hyperemesis syndrome are steadily increasing overall, the state of the science supporting the treatments, prognosis, etiology, and confounding factors (including cannabis use) is of moderate quality. Much of the literature portrays these conditions separately and as such sometimes fails to account for the confounding of adult cyclic vomiting syndrome with cannabis hyperemesis syndrome. The diagnostic and therapeutic approaches are, at present, based generally on case series publications and expert opinion, with a very limited number of randomized controlled trials and a complete absence of Level 1 evidence within the cyclic vomiting literature overall as well as for cannabis hyperemesis syndrome specifically.
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Affiliation(s)
- James R Lathrop
- James R. Lathrop, DNP, FNP, ARNP, is a PhD student under the Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Sheldon N. Rosen, MD, is Clinical Associate Professor, Division of Gastroenterology, School of Medicine, University of Washington, Seattle
- Margaret M. Heitkemper, PhD, RN, FAAN, is Professor and Elizabeth Sterling Soule Endowed Chair in Nursing, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Diana Taibi Buchanan, PhD, RN, is Associate Professor and Mary S. Tschudin Endowed Professor of Nursing Education, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
| | - Sheldon N Rosen
- James R. Lathrop, DNP, FNP, ARNP, is a PhD student under the Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Sheldon N. Rosen, MD, is Clinical Associate Professor, Division of Gastroenterology, School of Medicine, University of Washington, Seattle
- Margaret M. Heitkemper, PhD, RN, FAAN, is Professor and Elizabeth Sterling Soule Endowed Chair in Nursing, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Diana Taibi Buchanan, PhD, RN, is Associate Professor and Mary S. Tschudin Endowed Professor of Nursing Education, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
| | - Margaret M Heitkemper
- James R. Lathrop, DNP, FNP, ARNP, is a PhD student under the Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Sheldon N. Rosen, MD, is Clinical Associate Professor, Division of Gastroenterology, School of Medicine, University of Washington, Seattle
- Margaret M. Heitkemper, PhD, RN, FAAN, is Professor and Elizabeth Sterling Soule Endowed Chair in Nursing, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Diana Taibi Buchanan, PhD, RN, is Associate Professor and Mary S. Tschudin Endowed Professor of Nursing Education, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
| | - Diana Taibi Buchanan
- James R. Lathrop, DNP, FNP, ARNP, is a PhD student under the Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Sheldon N. Rosen, MD, is Clinical Associate Professor, Division of Gastroenterology, School of Medicine, University of Washington, Seattle
- Margaret M. Heitkemper, PhD, RN, FAAN, is Professor and Elizabeth Sterling Soule Endowed Chair in Nursing, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
- Diana Taibi Buchanan, PhD, RN, is Associate Professor and Mary S. Tschudin Endowed Professor of Nursing Education, Department of Biobehavioral Nursing & Health Informatics, School of Nursing, University of Washington, Seattle
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Lorenzetti V, Kowalczyk M, Duehlmeyer L, Greenwood LM, Chye Y, Yücel M, Whittle S, Roberts CA. Brain Anatomical Alterations in Young Cannabis Users: Is it All Hype? A Meta-Analysis of Structural Neuroimaging Studies. Cannabis Cannabinoid Res 2023; 8:184-196. [PMID: 35443799 DOI: 10.1089/can.2021.0099] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Introduction: Cannabis use has a high prevalence in young youth and is associated with poor psychosocial outcomes. Such outcomes have been ascribed to the impact of cannabis exposure on the developing brain. However, findings from individual studies of volumetry in youth cannabis users are equivocal. Objectives: Our primary objective was to systematically review the evidence on brain volume differences between young cannabis users and nonusers aged 12-26 where profound neuromaturation occurs, accounting for the role of global brain volumes (GBVs). Our secondary objective was to systematically integrate the findings on the association between youth age and volumetry in youth cannabis users. Finally, we aimed to evaluate the quality of the evidence. Materials and Methods: A systematic search was run in three databases (PubMed, Scopus, and PsycINFO) and was reported using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. We run meta-analyses (with and without controlling for GBV) of brain volume differences between young cannabis users and nonusers. We conducted metaregressions to explore the role of age on volumetric differences. Results: Sixteen studies were included. The reviewed samples included 830 people with mean age 22.5 years (range 14-26 years). Of these, 386 were cannabis users (with cannabis use onset at 15-19 years) and 444 were controls. We found no detectable group differences in any of the GBVs (intracranium, total brain, total white matter, and total gray matter) and regional brain volumes (i.e., hippocampus, amygdala, orbitofrontal cortex, and total cerebellum). Age and cannabis use level did not predict (standardized mean) volume group differences in metaregression. We found little evidence of publication bias (Egger's test p>0.1). Conclusions: Contrary to evidence in adult samples (or in samples mixing adults and youth), previous single studies in young cannabis users, and meta-analyses of brain function in young cannabis users, this early evidence suggests nonsignificant volume differences between young cannabis users and nonusers. While prolonged and long-term exposure to heavy cannabis use may be required to detect gross volume alterations, more studies in young cannabis users are needed to map in detail cannabis-related neuroanatomical changes.
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Affiliation(s)
- Valentina Lorenzetti
- Neuroscience of Addiction and Mental Health Program, Healthy Brain and Mind Research Centre, School of Behavioural and Health Sciences, Faculty of Health Sciences, Australian Catholic University, Fitzroy, Australia
| | - Magdalena Kowalczyk
- Neuroscience of Addiction and Mental Health Program, Healthy Brain and Mind Research Centre, School of Behavioural and Health Sciences, Faculty of Health Sciences, Australian Catholic University, Fitzroy, Australia
| | - Leonie Duehlmeyer
- Neuroscience of Addiction and Mental Health Program, Healthy Brain and Mind Research Centre, School of Behavioural and Health Sciences, Faculty of Health Sciences, Australian Catholic University, Fitzroy, Australia
| | - Lisa-Marie Greenwood
- Research School of Psychology, The Australian National University, Canberra, Australia
| | - Yann Chye
- BrainPark, The Turner Institute for Brain and Mental Health, School of Psychological Sciences and Monash Biomedical Imaging Facility, Clayton, Australia
| | - Murat Yücel
- BrainPark, The Turner Institute for Brain and Mental Health, School of Psychological Sciences and Monash Biomedical Imaging Facility, Clayton, Australia
| | - Sarah Whittle
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne, Carlton, Australia
| | - Carl A Roberts
- Department of Psychology, University of Liverpool, Liverpool, United Kingdom
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Ferland JMN, Ellis RJ, Betts G, Silveira MM, de Firmino JB, Winstanley CA, Hurd YL. Long-Term Outcomes of Adolescent THC Exposure on Translational Cognitive Measures in Adulthood in an Animal Model and Computational Assessment of Human Data. JAMA Psychiatry 2023; 80:66-76. [PMID: 36416863 PMCID: PMC9685552 DOI: 10.1001/jamapsychiatry.2022.3915] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 10/02/2022] [Indexed: 11/24/2022]
Abstract
Importance Although perceived as relatively harmless and nonaddictive, adolescent cannabis use significantly increases the likelihood of developing cannabis use disorder in adulthood, especially for high-potency cannabis. Risky decision-making is associated with chronic cannabis use, but given confounds of human studies, it remains unclear whether adolescent cannabis exposure and Δ9-tetrahydrocannabinol (THC) potency specifically predicts risky decision-making or influences cognitive response to the drug later in life. Objective To leverage a human data set of cannabis users and a rat model to evaluate the long-term outcomes of adolescent THC exposure on adult decision-making and impulse control. Design, Setting, and Participants This translational rat study tested the link between adolescent THC exposure and adulthood decision-making. A reanalysis of a previously published dataset of human chronic cannabis users was conducted to evaluate decision-making phenotypes. Computational modeling assessed the human and animal results in a single framework. Data were collected from 2017 to 2020 and analyzed from 2020 to 2022. Main Outcomes and Measures Decision-making was measured by the Iowa Gambling Task (IGT) and Rat Gambling Task (rGT). Impulse control was assessed in the rat model. Computational modeling was used to determine reward and punishment learning rates and learning strategy used by cannabis users and THC-exposed rats. Cell-specific molecular measures were conducted in the prefrontal cortex and amygdala. Results Of 37 participants, 24 (65%) were male, and the mean (SD) age was 33.0 (8.3) years. Chronic cannabis users (n = 22; mean [SE] IGT score, -5.182 [1.262]) showed disadvantageous decision-making compared with controls (n = 15; mean [SE] IGT score, 7.133 [2.687]; Cohen d = 1.436). Risky choice was associated with increased reward learning (mean [SE] IGT score: cannabis user, 0.170 [0.018]; control, 0.046 [0.008]; Cohen d = 1.895) and a strategy favoring exploration vs long-term gains (mean [SE] IGT score: cannabis user, 0.088 [0.012]; control, 0.020 [0.002]; Cohen d = 2.218). Rats exposed to high-dose THC but not low-dose THC during adolescence also showed increased risky decision-making (mean [SE] rGT score: vehicle, 46.17 [7.02]; low-dose THC, 69.45 [6.01]; high-dose THC, 21.97 [11.98]; Cohen d = 0.433) and elevated reward learning rates (mean [SE] rGT score: vehicle, 0.17 [0.01]; low-dose THC, 0.10 [0.01]; high-dose THC, 0.24 [0.06]; Cohen d = 1.541) during task acquisition. These animals were also uniquely susceptible to increased cognitive impairments after reexposure to THC in adulthood, which was correlated with even greater reward learning (r = -0.525; P < .001) and a shift in strategy (r = 0.502; P < .001), similar to results seen in human cannabis users. Molecular studies revealed that adolescent THC dose differentially affected cannabinoid-1 receptor messenger RNA expression in the prelimbic cortex and basolateral amygdala in a layer- and cell-specific manner. Further, astrocyte glial fibrillary acidic protein messenger RNA expression associated with cognitive deficits apparent with adult THC reexposure. Conclusions and Relevance In this translational study, high-dose adolescent THC exposure was associated with cognitive vulnerability in adulthood, especially with THC re-exposure. These data also suggest a link between astrocytes and cognition that altogether provides important insights regarding the neurobiological genesis of risky cannabis use that may help promote prevention and treatment efforts.
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Affiliation(s)
- Jacqueline-Marie N. Ferland
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Randall J. Ellis
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York
- Addiction Institute of Mount Sinai, New York, New York
| | - Graeme Betts
- Djavad Mowafaghian Centre for Brain Health, Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mason M. Silveira
- Djavad Mowafaghian Centre for Brain Health, Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Joao Bronze de Firmino
- The Collaborative Advanced Microscopy Laboratories of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Catharine A. Winstanley
- Djavad Mowafaghian Centre for Brain Health, Department of Psychology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Yasmin L. Hurd
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, New York
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, New York
- Addiction Institute of Mount Sinai, New York, New York
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21
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Baltes-Flueckiger L, Steinauer R, Meyer M, Vogel M, Walter M. Effects of cannabis regulation in Switzerland: Study protocol of a randomized controlled trial. Front Psychiatry 2023; 14:1139325. [PMID: 37032954 PMCID: PMC10076568 DOI: 10.3389/fpsyt.2023.1139325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/07/2023] [Indexed: 04/11/2023] Open
Abstract
Background Cannabis is the most widely used illicit substance. Various countries have legalized cannabis for recreational use. Evidence on the health effects of cannabis regulation remains unclear and is mainly based on observational studies. To date, there is no randomized controlled study evaluating the impact of cannabis regulation for recreational use compared to the illicit market on relevant health indicators. The present study ("Weed Care") is the first to evaluate the impact of regulated cannabis access in pharmacies versus a waiting list control group representing the illicit market on problematic cannabis use as well as on mental and physical health. Methods The study is divided into two parts-a randomized controlled study of 6 months followed by an observational study of 2 years. Participants (N = 374) are randomly assigned to either the experimental group with access to legal cannabis in pharmacies or to the waiting list control group representing the current legal framework in Switzerland, namely the illicit market. After 6 months, all participants will have access to legal cannabis for the following 2 years (observational study). The primary outcome is problematic cannabis use as measured with the Cannabis Use Disorders Identification Test-Revised (CUDIT-R). Secondary outcomes are cannabis use patterns, mental disorders (e.g., depression, anxiety, and psychosis) and physical health (e.g., respiratory symptoms). Primary and secondary outcomes will be assessed online every 6 months. The study is approved by the responsible ethics committee as well as by the Swiss Federal Office of Public Health. Discussion Findings from this study may provide a scientific basis for future discussions about addiction medicine and cannabis policy in Switzerland. Clinical Trial Registration ClinicalTrials.gov (NCT05522205). https://clinicaltrials.gov/ct2/show/NCT05522205.
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Affiliation(s)
- Lavinia Baltes-Flueckiger
- Psychiatric and Psychotherapeutic Clinic, Psychiatric Services Aargau, Windisch, Switzerland
- *Correspondence: Lavinia Baltes-Flueckiger,
| | | | - Maximilian Meyer
- Psychiatric University Clinics Basel, University of Basel, Basel, Switzerland
| | - Marc Vogel
- Psychiatric University Clinics Basel, University of Basel, Basel, Switzerland
| | - Marc Walter
- Psychiatric and Psychotherapeutic Clinic, Psychiatric Services Aargau, Windisch, Switzerland
- Faculty of Medicine, University of Basel, Basel, Switzerland
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22
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Scott JC. Impact of Adolescent Cannabis Use on Neurocognitive and Brain Development. Child Adolesc Psychiatr Clin N Am 2023; 32:21-42. [PMID: 36410904 DOI: 10.1016/j.chc.2022.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Research examining associations between frequent cannabis use in adolescence and brain-behavior outcomes has increased substantially over the past 2 decades. This review attempts to synthesize the state of evidence in this area of research while acknowledging challenges in interpretation. Although there is converging evidence that ongoing, frequent cannabis use in adolescence is associated with small reductions in cognitive functioning, there is still significant debate regarding the persistence of reductions after a period of abstinence. Similarly, there is controversy regarding the replicability of structural and functional neuroimaging findings related to frequent cannabis use in adolescence. Larger studies with informative designs are needed.
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Affiliation(s)
- J Cobb Scott
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, 3700 Hamilton Walk, 5th Floor, Philadelphia, PA 19104, USA; VISN4 Mental Illness Research, Education, and Clinical Center at the Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA 19104, USA.
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23
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Anderson MA, Budney AJ, Jacobson NC, Nahum-Shani I, Stanger C. End User Participation in the Development of an Ecological Momentary Intervention to Improve Coping With Cannabis Cravings: Formative Study. JMIR Form Res 2022; 6:e40139. [PMID: 36520509 PMCID: PMC9801264 DOI: 10.2196/40139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 10/28/2022] [Accepted: 11/01/2022] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Cannabis misuse in young adults is a major public health concern. An important predictor of continued use is cannabis craving. Due to the time-varying nature of cravings, brief momentary interventions delivered while cravings are elevated may improve the use of strategies to cope with cravings and reduce cannabis use. OBJECTIVE The goal of this manuscript is to describe a formative study to develop coping strategy messages for use in a subsequent intervention. METHODS Young adults (aged 19-25 years; n=20) who reported using cannabis >10 of the past 30 days recruited via social media participated in this formative study. Participants rated an initial set of 15 mindfulness and 15 distraction coping strategies on a scale from 1 to 4 (very low degree to very high degree) for clarity, usefulness, and tone. They also provided comments about the content. RESULTS Participants found the initial distraction messages slightly clearer than mindfulness (mean 3.5, SD 0.4 and mean 3.4, SD 0.4, respectively), both were comparable in tone (mean 3.2, SD 0.5 and mean 3.2, SD 0.4, respectively), and mindfulness messages were more useful than distraction (mean 3.0, SD 0.5 and mean 2.8, SD 0.6, respectively). Of the 30 messages, 29 received a rating of very low or low (<2) on any domain by >3 participants or received a comment suggesting a change. We revised all these messages based on this feedback, and the participants rated the revised messages approximately 2 weeks later. Participants earned US $10 for completing the first and US $20 for the second survey. The ratings improved on usefulness (especially the distraction items) with very little change in clarity and tone. The top 10 messages of each coping type (mindfulness and distraction) were identified by overall average rating (collapsed across all 3 dimensions: all rated >3.0). The final items were comparable in clarity (distraction mean 3.6, SD 0.4; mindfulness mean 3.6, SD 0.4), tone (distraction mean 3.4, SD 0.4; mindfulness mean 3.4, SD 0.4), and usefulness (distraction mean 3.1, SD 0.5; mindfulness mean 3.2, SD 0.5). CONCLUSIONS The inclusion of end users in the formative process of developing these messages was valuable and resulted in improvements to the content of the messages. The majority of the messages were changed in some way including the removal of potentially triggering language. These messages were subsequently used in an ecological momentary intervention.
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Affiliation(s)
- Molly A Anderson
- Center for Technology and Behavioral Health, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| | - Alan J Budney
- Center for Technology and Behavioral Health, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| | - Nicholas C Jacobson
- Center for Technology and Behavioral Health, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
| | - Inbal Nahum-Shani
- Institute for Social Research, University of Michigan, Ann Arbor, MI, United States
| | - Catherine Stanger
- Center for Technology and Behavioral Health, Geisel School of Medicine, Dartmouth College, Lebanon, NH, United States
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24
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Jochen A, Holben D. School Nurse Perspectives of Medical Cannabis Policy in K-12 Schools: An Exploratory Descriptive Study. J Sch Nurs 2022:10598405221136288. [PMID: 36377286 DOI: 10.1177/10598405221136288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024] Open
Abstract
As states legalize medical cannabis, school nurses face increased parent questions about administration at school. Although school nurses frequently collaborate on the development and implementation of medication administration policies, their perceptions of barriers to school-based medical cannabis administration are not well-documented. To explore these perceptions, we surveyed school nurses (n = 379) in sixteen states about their beliefs related to school-based medical cannabis administration policy development. Findings revealed school nurses from states completely legalizing cannabis expressed significantly fewer concerns about the safety, stigma, and federal status of medical cannabis than their peers in more restrictive states. Implications for practice include (a) education of key stakeholders, (b) collaboration with stakeholders to formulate medication administration policy; and (c) development of state-level guidance for school professionals.
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Affiliation(s)
- Alison Jochen
- Ross and Carol Nese College of Nursing, The Pennsylvania State University, University Park, Pennsylvania, USA
| | - Diane Holben
- Secondary Education Department, East Stroudsburg University in the Professional, East Stroudsburg University, Pennsylvania, USA
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25
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Trends in Canadian Cannabis Consumption Over Time: A Two-step Meta-analysis of Canadian Household Survey Data. CANADIAN JOURNAL OF ADDICTION 2022. [DOI: 10.1097/cxa.0000000000000154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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26
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Identifying risk-thresholds for the association between frequency of cannabis use and development of cannabis use disorder: A systematic review and meta-analysis. Drug Alcohol Depend 2022; 238:109582. [PMID: 35932748 DOI: 10.1016/j.drugalcdep.2022.109582] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 12/23/2022]
Abstract
BACKGROUND Cannabis use disorder (CUD) affects one-in-five cannabis users, presenting a major contributor to cannabis-associated disease burden. Epidemiological data identify the frequency of cannabis use as a risk factor for CUD. This review aimed to determine quantifiable risk-thresholds of the frequency of cannabis use for developing CUD. METHODS Systematic search of Medline, EMBASE, PsycInfo, CINAHL, and Web of Science for cohort/case-control studies that assessed the association between frequency of cannabis use and CUD from 2000 to 2022. Effect estimates were converted to risk ratios (RR). A random-effects multi-level multivariate meta-analytic approach was utilized, and sensitivity analyses conducted. Quality of included studies was assessed with the Newcastle Ottawa Scale. RESULTS Six prospective cohort studies were included in this review, drawn from two main source studies. Random-effect modeling showed a significant log-linear dose-response association between the frequency of cannabis use and CUD risk (p < 0.0001). The risk of CUD increased from RR:2.03 (95% CI:1.85-2.22) for 'yearly' use, to RR:4.12 (95% CI:3.44-4.95) for 'monthly" use, RR:8.37 (95% CI:6.37-11.00) for 'weekly' use, and RR:16.99 (95% CI:11.80-24.46) for 'daily' use. Multi-level modeling showed an absolute risk increase (ARI) from 3.5% (95% CI:2.6-4.7) for 'yearly' use, to 8.0% (95% CI:5.3-12.1) for 'monthly' use, to 16.8% (95% CI:8.8-32.0) for 'weekly' use, and 36% (95% CI:27.047.9) for 'daily' use. CONCLUSION A limited risk of CUD as a potential outcome of cannabis use exists even at infrequent levels of use, but significantly increases as frequency of use increases. Corresponding information should be conveyed to cannabis users as part of targeted prevention messaging to promote safer cannabis use.
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27
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Dotson S, Johnson-Arbor K, Schuster RM, Tervo-Clemmens B, Evins AE. Unknown risks of psychosis and addiction with delta-8-THC: A call for research, regulation, and clinical caution. Addiction 2022; 117:2371-2373. [PMID: 35322899 DOI: 10.1111/add.15873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 03/02/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Samuel Dotson
- Atrium Health Department of Psychiatry, Charlotte, NC, USA
| | - Kelly Johnson-Arbor
- MedStar Georgetown University Hospital and the National Capital Poison Center, Washington, DC, USA
| | - Randi M Schuster
- Massachusetts General Hospital Department of Psychiatry and Harvard Medical School, Boston, MA, USA
| | - Brenden Tervo-Clemmens
- Massachusetts General Hospital Department of Psychiatry and Harvard Medical School, Boston, MA, USA
| | - A Eden Evins
- Massachusetts General Hospital Department of Psychiatry and Harvard Medical School, Boston, MA, USA
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28
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Haney M, Bedi G, Cooper ZD, Herrmann ES, Reed SC, Foltin RW, Kingsley PJ, Marnett LJ, Patel S. Impact of cyclooxygenase‐2 inhibition on cannabis withdrawal and circulating endocannabinoids in daily cannabis smokers. Addict Biol 2022; 27:e13183. [DOI: 10.1111/adb.13183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/07/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Margaret Haney
- New York State Psychiatric Institute New York New York USA
- Columbia University Irving Medical Center New York New York USA
| | - Gillinder Bedi
- Centre for Youth Mental Health The University of Melbourne and Substance Use Research Group, Orygen Melbourne Australia
| | - Ziva D. Cooper
- Los Angeles Cannabis Research Initiative, Jane & Terry Semel Institute for Neuroscience & Human Behavior, Department of Psychiatry and Biobehavioral Sciences, Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine University of California Los Angeles California USA
| | - Evan S. Herrmann
- Division of Therapeutics and Medical Consequences National Institute on Drug Abuse Bethesda Maryland USA
| | - Stephanie Collins Reed
- New York State Psychiatric Institute New York New York USA
- Columbia University Irving Medical Center New York New York USA
| | - Richard W. Foltin
- New York State Psychiatric Institute New York New York USA
- Columbia University Irving Medical Center New York New York USA
| | - Philip J. Kingsley
- A.B. Hancock Jr. Memorial Laboratory for Cancer Research, Departments of Biochemistry, Chemistry, and Pharmacology Vanderbilt University Nashville Tennessee USA
| | - Lawrence J. Marnett
- A.B. Hancock Jr. Memorial Laboratory for Cancer Research, Departments of Biochemistry, Chemistry, and Pharmacology Vanderbilt University Nashville Tennessee USA
| | - Sachin Patel
- Department of Psychiatry and Behavioral Sciences Vanderbilt University Medical Center Nashville Tennessee USA
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29
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Rafei P, Rezapour T, Batouli SAH, Verdejo-García A, Lorenzetti V, Hatami J. How do cannabis users mentally travel in time? Evidence from an fMRI study of episodic future thinking. Psychopharmacology (Berl) 2022; 239:1441-1457. [PMID: 34694424 DOI: 10.1007/s00213-021-06002-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 10/11/2021] [Indexed: 11/30/2022]
Abstract
RATIONALE Episodic future thinking (EFT) is a cognitive function that allows individuals to imagine novel experiences that may happen in the future. Prior studies show that EFT is impaired in different groups of substance users. However, there is no evidence regarding the neurobiological mechanisms of EFT in cannabis users. OBJECTIVES We aimed to compare brain activations of regular cannabis users and non-using controls during an EFT fMRI task. Exploratory analyses were also conducted to investigate the association between EFT and cannabis use variables (e.g., duration of use, age onset, frequency of use). METHODS Twenty current cannabis users and 22 drug-naïve controls underwent an fMRI scanning session while completing a task involving envisioning future-related events and retrieval of past memories as a control condition. The EFT fMRI task was adapted from the autobiographical interview and composed of 20 auditory cue sentences (10 cues for past and 10 cues for future events). Participants were asked to recall a past or generate a future event, in response to the cues, and then rate their vividness after each response. RESULTS We found that cannabis users compared to non-user controls had lower activation within the cerebellum, medial and superior temporal gyrus, lateral occipital cortex, and occipital fusiform gyrus while envisioning future events. Cannabis users rated the vividness of past events significantly lower than non-users (P < 0.005). There were marginal group differences for rating the vividness of future events (P = 0.052). Significant correlations were also found between the medial and superior temporal gyrus activities and behavioral measures of EFT and episodic memory. CONCLUSIONS Cannabis users, compared to drug-naïve controls, have lower brain activation in EFT relevant regions. Thus, any attempts to improve aberrant EFT performance in cannabis users may benefit from EFT training.
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Affiliation(s)
- Parnian Rafei
- Department of Psychology, Faculty of Psychology and Education, University of Tehran, Tehran, Iran
| | - Tara Rezapour
- Department of Cognitive Psychology, Institute of Cognitive Sciences Studies (ICSS), Tehran, Iran
| | - Seyed Amir Hossein Batouli
- Department of Neuroscience and Addiction Studies, School of Advanced Medical Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Antonio Verdejo-García
- Turner Institute for Brain and Mental Health, Monash University, Melbourne, Victoria, Australia
| | - Valentina Lorenzetti
- Healthy Brain and Mind Research Centre, School of Behavioral & Health Sciences, Neuroscience of Addiction and Mental Health Program, Australian Catholic University, Victoria, Australia
| | - Javad Hatami
- Department of Psychology, Faculty of Psychology and Education, University of Tehran, Tehran, Iran.
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30
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Penzel N, Sanfelici R, Antonucci LA, Betz LT, Dwyer D, Ruef A, Cho KIK, Cumming P, Pogarell O, Howes O, Falkai P, Upthegrove R, Borgwardt S, Brambilla P, Lencer R, Meisenzahl E, Schultze-Lutter F, Rosen M, Lichtenstein T, Kambeitz-Ilankovic L, Ruhrmann S, Salokangas RKR, Pantelis C, Wood SJ, Quednow BB, Pergola G, Bertolino A, Koutsouleris N, Kambeitz J, Dwyer D, Ruef A, Kambeitz-Ilankovic L, Sen Dong M, Erkens A, Gussmann E, Haas S, Hasan A, Hoff C, Khanyaree I, Melo A, Muckenhuber-Sternbauer S, Kohler J, Ozturk OF, Popovic D, Rangnick A, von Saldern S, Sanfelici R, Spangemacher M, Tupac A, Urquijo MF, Weiske J, Wosgien A, Kambeitz J, Ruhrmann S, Rosen M, Betz L, Lichtenstein T, Blume K, Seves M, Kaiser N, Penzel N, Pilgram T, Lichtenstein T, Wenzel J, Woopen C, Borgwardt S, Andreou C, Egloff L, Harrisberger F, Lenz C, Leanza L, Mackintosh A, Smieskova R, Studerus E, Walter A, Widmayer S, Upthegrove R, Wood SJ, Chisholm K, Day C, Griffiths SL, Lalousis PA, Iqbal M, Pelton M, Mallikarjun P, Stainton A, Lin A, Salokangas RKR, Denissoff A, Ellila A, From T, Heinimaa M, Ilonen T, Jalo P, Laurikainen H, Lehtinen M, Luutonen A, Makela A, Paju J, Pesonen H, Armio Säilä RL, Sormunen E, Toivonen A, Turtonen O, Solana AB, Abraham M, Hehn N, Schirmer T, Brambilla P, Altamura C, Belleri M, Bottinelli F, Ferro A, Re M, Monzani E, Percudani M, Sberna M, D’Agostino A, Del Fabro L, Perna G, Nobile M, Alciati A, Balestrieri M, Bonivento C, Cabras G, Fabbro F, Garzitto M, PiCCuin S, Bertolino A, Blasi G, Antonucci LA, Pergola G, Caforio G, Faio L, Quarto T, Gelao B, Romano R, Andriola I, Falsetti A, Barone M, Passatiore R, Sangiuliano M, Lencer R, Surman M, Bienek O, Romer G, Dannlowski U, Meisenzahl E, Schultze-Lutter F, Schmidt-Kraepelin C, Neufang S, Korda A, Rohner H. Pattern of predictive features of continued cannabis use in patients with recent-onset psychosis and clinical high-risk for psychosis. SCHIZOPHRENIA (HEIDELBERG, GERMANY) 2022; 8:19. [PMID: 35264631 PMCID: PMC8907166 DOI: 10.1038/s41537-022-00218-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/31/2022] [Indexed: 11/09/2022]
Abstract
Continued cannabis use (CCu) is an important predictor for poor long-term outcomes in psychosis and clinically high-risk patients, but no generalizable model has hitherto been tested for its ability to predict CCu in these vulnerable patient groups. In the current study, we investigated how structured clinical and cognitive assessments and structural magnetic resonance imaging (sMRI) contributed to the prediction of CCu in a group of 109 patients with recent-onset psychosis (ROP). We tested the generalizability of our predictors in 73 patients at clinical high-risk for psychosis (CHR). Here, CCu was defined as any cannabis consumption between baseline and 9-month follow-up, as assessed in structured interviews. All patients reported lifetime cannabis use at baseline. Data from clinical assessment alone correctly classified 73% (p < 0.001) of ROP and 59 % of CHR patients. The classifications of CCu based on sMRI and cognition were non-significant (ps > 0.093), and their addition to the interview-based predictor via stacking did not improve prediction significantly, either in the ROP or CHR groups (ps > 0.065). Lower functioning, specific substance use patterns, urbanicity and a lack of other coping strategies contributed reliably to the prediction of CCu and might thus represent important factors for guiding preventative efforts. Our results suggest that it may be possible to identify by clinical measures those psychosis-spectrum patients at high risk for CCu, potentially allowing to improve clinical care through targeted interventions. However, our model needs further testing in larger samples including more diverse clinical populations before being transferred into clinical practice.
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Affiliation(s)
- Nora Penzel
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Psychiatry and Psychotherapy, Cologne, Germany.,Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany.,Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari 'Aldo Moro', Bari, Italy
| | - Rachele Sanfelici
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany.,Max-Planck Institute of Psychiatry, Munich, Germany
| | - Linda A Antonucci
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany.,Department of Education, Psychology, Communication, University of Bari, Bari, Italy
| | - Linda T Betz
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Psychiatry and Psychotherapy, Cologne, Germany
| | - Dominic Dwyer
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany
| | - Anne Ruef
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany
| | - Kang Ik K Cho
- Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Paul Cumming
- Department of Nuclear Medicine, Bern University Hospital, Bern, Switzerland.,School of Psychology and Counselling, Queensland University of Technology, Brisbane, QLD, Australia.,International Research Lab in Neuropsychiatry, Neuroscience Research Institute, Samara State Medical University, Samara, Russia
| | - Oliver Pogarell
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany
| | - Oliver Howes
- Department of Psychosis Studies, Institute of Psychiatry, Psychology & Neuroscience, King's College London, De Crespigny Park, London, SE5 8AF, UK.,MRC London Institute of Medical Sciences, Hammersmith Hospital, London, W12 0NN, UK.,Institute of Clinical Sciences, Faculty of Medicine, Imperial College London, London, W12 0NN, UK.,South London and Maudsley NHS Foundation Trust, London, SE5 8AF, UK
| | - Peter Falkai
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany.,Max-Planck Institute of Psychiatry, Munich, Germany
| | - Rachel Upthegrove
- Institute for Mental Health, University of Birmingham, Birmingham, UK.,Early Intervention Service, Birmingham Womens and Childrens NHS Foundation Trust, Birmingham, UK
| | - Stefan Borgwardt
- Department of Psychiatry (UPK), University of Basel, Basel, Switzerland.,Department of Psychiatry and Psychotherapy, University of Lübeck, Lübeck, Germany
| | - Paolo Brambilla
- Department of Neurosciences and Mental Health, Fondazione IRCCUS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy.,Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Rebekka Lencer
- Department of Psychiatry and Psychotherapy, University of Lübeck, Lübeck, Germany.,Department of Psychiatry and Psychotherapy, University of Münster, Münster, Germany.,Otto Creutzfeldt Center for Behavioral and Cognitive Neuroscience, University of Münster, Münster, Germany
| | - Eva Meisenzahl
- Department of Psychiatry and Psychotherapy, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany
| | - Frauke Schultze-Lutter
- Department of Psychiatry and Psychotherapy, Medical Faculty, Heinrich-Heine University, Düsseldorf, Germany.,Department of Psychology, Faculty of Psychology, Airlangga University, Surabaya, Indonesia.,University Hospital of Child and Adolescent Psychiatry and Psychotherapy, University of Bern, Bern, Switzerland
| | - Marlene Rosen
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Psychiatry and Psychotherapy, Cologne, Germany
| | - Theresa Lichtenstein
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Psychiatry and Psychotherapy, Cologne, Germany
| | - Lana Kambeitz-Ilankovic
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Psychiatry and Psychotherapy, Cologne, Germany.,Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany
| | - Stephan Ruhrmann
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Psychiatry and Psychotherapy, Cologne, Germany
| | | | - Christos Pantelis
- Melbourne Neuropsychiatry Centre, University of Melbourne & Melbourne Health, Melbourne, VIC, Australia
| | - Stephen J Wood
- Institute for Mental Health, University of Birmingham, Birmingham, UK.,Orygen, Melbourne, VIC, Australia.,Centre for Youth Mental Health, University of Melbourne, Melbourne, VIC, Australia
| | - Boris B Quednow
- Experimental and Clinical Pharmacopsychology, Department of Psychiatry, Psychotherapy, and Psychosomatics, Psychiatric Hospital of the University of Zurich, Lenggstr. 31, 8032, Zurich, Switzerland
| | - Giulio Pergola
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari 'Aldo Moro', Bari, Italy
| | - Alessandro Bertolino
- Group of Psychiatric Neuroscience, Department of Basic Medical Sciences, Neuroscience and Sense Organs, University of Bari 'Aldo Moro', Bari, Italy
| | - Nikolaos Koutsouleris
- Department of Psychiatry and Psychotherapy, Ludwig-Maximilian-University, Munich, Germany.,Max-Planck Institute of Psychiatry, Munich, Germany.,Institute of Psychiatry, Psychology & Neuroscience, Department of Psychosis Studies, King's College London, London, UK
| | - Joseph Kambeitz
- University of Cologne, Faculty of Medicine and University Hospital Cologne, Department of Psychiatry and Psychotherapy, Cologne, Germany.
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Sorensen JL, Draanen J, Shingle M. Legalization of cannabis in Canada—Local media analysis. Am J Addict 2022; 31:148-151. [DOI: 10.1111/ajad.13263] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2021] [Revised: 01/05/2022] [Accepted: 01/16/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- James L. Sorensen
- Department of Psychiatry and Behavioral Sciences, School of Medicine University of California San Francisco San Francisco California USA
- Zuckerberg San Francisco General Hospital & Medical Center San Francisco California USA
| | - Jenna Draanen
- Family and Population Health Nursing; and Health Systems and Population Health University of Washington Child Seattle Washington USA
| | - Mallory Shingle
- Department of Psychiatry and Behavioral Sciences, School of Medicine University of California San Francisco San Francisco California USA
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Affiliation(s)
- Margaret Haney
- Division on Substance Use Disorders, Department of Psychiatry, Columbia University Irving Medical Center, and New York State Psychiatric Institute, New York
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Zongo A, Lee C, Dyck JRB, El-Mourad J, Hyshka E, Hanlon JG, Eurich DT. Incidence and Predictors of Cannabis-Related Poisoning and Mental and Behavioral Disorders among Patients with Medical Cannabis Authorization: A Cohort Study. Subst Use Misuse 2022; 57:1633-1641. [PMID: 35866679 DOI: 10.1080/10826084.2022.2102193] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE As medical cannabis use increases in North America, establishing its safety profile is a priority. The objective of this study was to assess rates of emergency department (ED) visits and hospitalizations due to poisoning by cannabis, and cannabis-related mental health disorders among medically authorized cannabis patients in Ontario, Canada, between 2014 and 2017. METHODS This is a retrospective cohort study of patients who received medical cannabis authorization in Ontario, Canada, using data collected in participating cannabis clinics. Outcomes included ED visit/hospitalization with a main diagnosis code for: cannabis/cannabinoid poisoning; and mental/behavioral disorders due to cannabis use. Cox proportional hazard regressions were utilized to analyze the data. RESULTS From 29,153 patients who received medical authorization, 23,091 satisfied the inclusion criteria. During a median follow-up of 240 days, 14 patients visited the ED or were hospitalized for cannabis poisoning-with an incidence rate of 8.06 per 10,000 person-years (95% CI: 4.8-13.6). A total of 26 patients visited the ED or were hospitalized for mental and behavioral disorders due to cannabis use-with an incidence rate of 15.0 per 10,000 person-years (95% CI: 10.2-22.0). Predictors of cannabis-related mental and behavioral disorders include prior substance use disorders, other mental disorders, age, diabetes, and chronic obstructive pulmonary disease. CONCLUSIONS The results suggest that the incidence of cannabis poisoning or cannabis-related mental and behavioral disorders was low among patients who were authorized to use cannabis for medical care. Identified predictors can help to target patients with potential risk of the studied outcomes.
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Affiliation(s)
- Arsene Zongo
- Faculty of Pharmacy, Université Laval, Quebec City, Quebec, Canada.,Population Health and Optimal Health Practices Research Unit, CHU de Québec - Université Laval Research Centre, Quebec City, Quebec, Canada
| | - Cerina Lee
- School of Public Health, University of Alberta, Edmonton, Alberta, Canada
| | - Jason R B Dyck
- Cardiovascular Research Centre, Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Jihane El-Mourad
- Faculty of Pharmacy, Université Laval, Quebec City, Quebec, Canada.,Population Health and Optimal Health Practices Research Unit, CHU de Québec - Université Laval Research Centre, Quebec City, Quebec, Canada
| | - Elaine Hyshka
- Population Health and Optimal Health Practices Research Unit, CHU de Québec - Université Laval Research Centre, Quebec City, Quebec, Canada
| | - John G Hanlon
- St. Michael's Hospital Department of Anesthesia, University of Toronto, Toronto, Ontario, Canada.,Department of Anaesthesiology and Pain Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Dean T Eurich
- School of Public Health, University of Alberta, Edmonton, Alberta, Canada
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Fischer B, Robinson T, Bullen C, Curran V, Jutras-Aswad D, Medina-Mora ME, Pacula RL, Rehm J, Room R, van den Brink W, Hall W. Lower-Risk Cannabis Use Guidelines (LRCUG) for reducing health harms from non-medical cannabis use: A comprehensive evidence and recommendations update. THE INTERNATIONAL JOURNAL OF DRUG POLICY 2022; 99:103381. [PMID: 34465496 DOI: 10.1016/j.drugpo.2021.103381] [Citation(s) in RCA: 55] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Cannabis use is common, especially among young people, and is associated with risks for various health harms. Some jurisdictions have recently moved to legalization/regulation pursuing public health goals. Evidence-based 'Lower Risk Cannabis Use Guidelines' (LRCUG) and recommendations were previously developed to reduce modifiable risk factors of cannabis-related adverse health outcomes; related evidence has evolved substantially since. We aimed to review new scientific evidence and to develop comprehensively up-to-date LRCUG, including their recommendations, on this evidence basis. METHODS Targeted searches for literature (since 2016) on main risk factors for cannabis-related adverse health outcomes modifiable by the user-individual were conducted. Topical areas were informed by previous LRCUG content and expanded upon current evidence. Searches preferentially focused on systematic reviews, supplemented by key individual studies. The review results were evidence-graded, topically organized and narratively summarized; recommendations were developed through an iterative scientific expert consensus development process. RESULTS A substantial body of modifiable risk factors for cannabis use-related health harms were identified with varying evidence quality. Twelve substantive recommendation clusters and three precautionary statements were developed. In general, current evidence suggests that individuals can substantially reduce their risk for adverse health outcomes if they delay the onset of cannabis use until after adolescence, avoid the use of high-potency (THC) cannabis products and high-frequency/-intensity of use, and refrain from smoking-routes for administration. While young people are particularly vulnerable to cannabis-related harms, other sub-groups (e.g., pregnant women, drivers, older adults, those with co-morbidities) are advised to exercise particular caution with use-related risks. Legal/regulated cannabis products should be used where possible. CONCLUSIONS Cannabis use can result in adverse health outcomes, mostly among sub-groups with higher-risk use. Reducing the risk factors identified can help to reduce health harms from use. The LRCUG offer one targeted intervention component within a comprehensive public health approach for cannabis use. They require effective audience-tailoring and dissemination, regular updating as new evidence become available, and should be evaluated for their impact.
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Affiliation(s)
- Benedikt Fischer
- Schools of Population Health and Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; Centre for Applied Research in Mental Health and Addiction, Faculty of Health Sciences, Simon Fraser University, Vancouver, Canada; Department of Psychiatry, Federal University of Sao Paulo, Sao Paulo, Brazil.
| | - Tessa Robinson
- Centre for Applied Research in Mental Health and Addiction, Faculty of Health Sciences, Simon Fraser University, Vancouver, Canada; Department of Health Research Methods, Evidence & Impact, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | - Chris Bullen
- Schools of Population Health and Pharmacy, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; National Institute for Health Innovation (NIHI), The University of Auckland, Auckland, New Zealand
| | - Valerie Curran
- Clinical Psychopharmacology Unit, Research Department of Clinical, Educational and Health Psychology, University College London, London, United Kingdom; NIHR University College London Hospitals Biomedical Research Centre, London, United Kingdom
| | - Didier Jutras-Aswad
- Department of Psychiatry and Addictology, Université de Montréal, Montreal, Canada; Research Centre of the Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Canada
| | - Maria Elena Medina-Mora
- Center for Global Mental Health Research, National Institute of Psychiatry Ramón de la Fuente Muñiz, Mexico City, Mexico; Department of Psychiatry and Mental Health, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Rosalie Liccardo Pacula
- Schaeffer Center for Health Policy and Economics, Sol Price School of Public Policy, University of Southern California, Los Angeles, United States
| | - Jürgen Rehm
- Institute for Mental Health Policy Research, Centre for Addiction & Mental Health, Toronto, Canada; Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Robin Room
- Centre for Alcohol Policy Research, La Trobe University, Melbourne, Australia; Centre for Social Research on Alcohol and Drugs, Department of Public Health Sciences, Stockholm University, Stockholm, Sweden
| | - Wim van den Brink
- Department of Psychiatry, University of Amsterdam, Amsterdam, the Netherlands; Amsterdam University Medical Centre, University of Amsterdam, Amsterdam, the Netherlands
| | - Wayne Hall
- National Centre for Youth Substance Use Research, Faculty of Health and Behavioural Sciences, University of Queensland, St Lucia, QLD 4072, Australia; National Addiction Centre, Institute of Psychiatry, Kings College London, United Kingdom
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Cloutier RM, Calhoun BH, Lanza ST, Linden-Carmichael AN. Assessing subjective cannabis effects in daily life with contemporary young adult language. Drug Alcohol Depend 2022; 230:109205. [PMID: 34890928 PMCID: PMC8714699 DOI: 10.1016/j.drugalcdep.2021.109205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/02/2021] [Accepted: 11/06/2021] [Indexed: 01/03/2023]
Abstract
INTRODUCTION Subjective ratings of cannabis effects are important predictors of use-related consequences. However, psychometric research is fairly limited, particularly for measures to capture variability in daily life when diverse modes of cannabis administration and co-substance use are common. METHODS This study evaluated the predictive utility of a revised item to assess perceived cannabis effects and examined modes of cannabis administration and alcohol and nicotine co-use as moderators. Participants were 106 young adults (18-25 years; 51% female) who completed up to 14 consecutive daily reports of substance use (n = 1405 person-days). Two measures of subjective effects were examined: a standard item (0-100 rating of "how high do you feel?") and a revised item that uses four crowd-sourced anchor points ranging from relaxed (0), calm/chill (33), high (67), and stoned/baked (100). The items shared substantial variance (Pseudo-R2 = 59.5%), however, the revised item showed greater within-person variability (77.0% vs. 68.8%) and stronger day-level associations with consumption levels (Pseudo-R2 = 25.0% vs. 16.7%). RESULTS The cannabis consumption-subjective effects link was weaker on blunt-only days compared to vape-only days. Subjective cannabis effects were higher on nicotine co-use days after controlling for cannabis consumption; neither alcohol nor nicotine co-use moderated the cannabis consumption-subjective effects link. DISCUSSION The revised subjective cannabis effects item is a viable alternative to the standard item among young adults who engage in simultaneous alcohol and cannabis use. CONCLUSIONS Future research focused on characterizing the variability in cannabis effects is needed.
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Affiliation(s)
- Renee M. Cloutier
- 314 Biobehavioral Health, The Edna Bennett Pierce Prevention Research Center, College of Health and Human Development, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Brian H. Calhoun
- The University of Washington, Department of Psychiatry and Behavioral Sciences, 1100 NE 45th Street, Suite 300, Box 354944, Seattle, WA 98105, USA
| | - Stephanie T. Lanza
- 314 Biobehavioral Health, The Edna Bennett Pierce Prevention Research Center, College of Health and Human Development, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Ashley N. Linden-Carmichael
- 314 Biobehavioral Health, The Edna Bennett Pierce Prevention Research Center, College of Health and Human Development, The Pennsylvania State University, University Park, PA, 16802, USA
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36
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McGuckin T, Ferro MA, Hammond D, Stewart S, Maloney-Hall B, Madi N, Porath A, Perlman CM. How High? Trends in Cannabis Use Prior to First Admission to Inpatient Psychiatry in Ontario, Canada, between 2007 and 2017. CANADIAN JOURNAL OF PSYCHIATRY. REVUE CANADIENNE DE PSYCHIATRIE 2021; 66:1059-1068. [PMID: 33380219 PMCID: PMC8689428 DOI: 10.1177/0706743720984679] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES To examine the trends in cannabis use within 30 days of first admission to inpatient psychiatry in Ontario, Canada, between 2007 and 2017, and the characteristics of persons reporting cannabis use. METHODS A retrospective cross-sectional analysis was conducted for first-time admissions to nonforensic inpatient psychiatric beds in Ontario, Canada, between January 1, 2007, and December 31, 2017, using data from the Ontario Mental Health Reporting System (N = 81,809). RESULTS Across all years, 20.1% of patients reported cannabis use within 30 days of first admission. Use increased from 16.7% in 2007 to 25.9% in 2017, and the proportion with cannabis use disorders increased from 3.8% to 6.0%. In 2017, 47.9% of patients aged 18 to 24 and 39.2% aged 25 to 34 used cannabis, representing absolute increases of 8.3% and 10.7%, respectively. Increases in cannabis use were found across almost all diagnostic groups, with the largest increases among patients with personality disorders (15% increase), schizophrenia or other psychotic disorders (14% increase), and substance use disorders (14% increase). A number of demographic and clinical factors were significantly associated with cannabis use, including interactions between schizophrenia and gender (area under the curve = 0.88). CONCLUSIONS As medical cannabis policies in Canada have evolved, cannabis use reported prior to first admission to inpatient psychiatry has increased. The findings of this study establish a baseline for evaluating the impact of changes in cannabis-related policies in Ontario on cannabis use prior to admission to inpatient psychiatry.
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Affiliation(s)
- Taylor McGuckin
- School of Public Health and Health Systems, University of Waterloo, Ontario, Canada
| | - Mark A Ferro
- School of Public Health and Health Systems, University of Waterloo, Ontario, Canada
| | - David Hammond
- School of Public Health and Health Systems, University of Waterloo, Ontario, Canada
| | - Shannon Stewart
- Faculty of Education, Applied Psychology, Western University, London, Ontario, Canada
| | | | - Nawaf Madi
- Canadian Institute for Health Information, Ottawa, Ontario, Canada
| | - Amy Porath
- Canadian Centre on Substance Use and Addiction, Ottawa, Ontario, Canada
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Clary KL, Habbal M, Smith DC, Fratila I. The Green Sheep: Exploring the Perceived Risks and Benefits of Cannabis Among Young Military Members and Veterans. CANNABIS (RESEARCH SOCIETY ON MARIJUANA) 2021; 4:31-46. [PMID: 37287531 PMCID: PMC10212263 DOI: 10.26828/cannabis/2021.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Medical and recreational cannabis are becoming more accessible and socially accepted across the United States. Emerging adults (EAs; 18 to 29) are the largest group of cannabis users. Studies have found that veterans are more likely to report cannabis use compared to nonveterans. While research exists on the use levels of cannabis, limited knowledge is available on the perceived risks and benefits of using cannabis among EA military and veteran populations. Helping professionals encounter veterans who use cannabis and must consider military cultural factors and attitudes towards cannabis that may influence or exacerbate cannabis use. We conducted a qualitative study with 23 EA veteran and military members with high-risk substance use and asked about their thoughts on the acceptability, risks, and perceived benefits associated with cannabis. Two qualitative coders used NVivo to find themes following the six steps of thematic analysis. Results provide in-depth understanding of EA military members and veterans' perceptions of cannabis. Overall, we found participants were receptive to using cannabis for pain ailments, mental health issues, and as an alternative to benzodiazepines, opioids, and alcohol. However, they acknowledged restrictions are needed to moderate cannabis use and mitigate negative outcomes. Lastly, participants recognized the incongruence of cannabis use with military job responsibilities and expectations. These findings shed light on potential risk and protective factors related to using cannabis for recreational or medical reasons and should be considered when consulting EA military members and veterans.
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Affiliation(s)
| | - Megan Habbal
- Department of Psychology, University of Illinois at Urbana-Champaign
| | - Douglas C. Smith
- School of Social Work, University of Illinois at Urbana-Champaign
| | - Iulia Fratila
- Community Health, University of Illinois at Urbana-Champaign
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38
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Pike CK, Sofis MJ, Budney AJ. Correlates of continued cannabis use during pregnancy. Drug Alcohol Depend 2021; 227:108939. [PMID: 34358772 PMCID: PMC8464496 DOI: 10.1016/j.drugalcdep.2021.108939] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 06/18/2021] [Accepted: 06/22/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Cannabis use is increasingly common among pregnant women despite concern that it may be linked to adverse maternal and infant outcomes. Determining whether variables associated with cannabis use predict whether women continue or quit using during pregnancy may inform strategies to reduce prenatal use. METHODS Pregnant women who regularly used cannabis before pregnancy (n = 296) were recruited via Facebook. After finding out they were pregnant, 41 % reported quitting, 13 % quit then relapsed, 32 % reduced use, and 15 % continued use at the same rate. Differences among these four cannabis use status groups (quit, relapsed, reduced, continued) in sociodemographics, cannabis use, cigarette use, perceived risk/benefit, delay discounting, and communications about cannabis with their doctor were assessed. RESULTS Compared to those who quit, continuing use during pregnancy was associated with being unemployed (Relative Risk (RR) = .32, 95 %CI [.13, .78]), using cigarettes pre-pregnancy (RR = 3.43, 95 %CI [1.32, 8.94]), being in an earlier trimester (RR = 4.38, 95 %CI [1.18, 16.23]), less perceived risk (RR = .79, 95 %CI [.74, .85]), and more days per week of use pre-pregnancy (RR = .10, 95 %CI [.01, .84]). Unintended pregnancy, shorter time to cannabis use after waking pre-pregnancy, using cannabis more times per day pre-pregnancy, and greater perceived benefits of use had significant bivariate associations with continued use during pregnancy, but did not retain significance in a multinomial model. CONCLUSIONS Identification of these correlates provides potential targets for prevention of or intervention for prenatal cannabis use. However, much more research is needed to understand prenatal cannabis use and its effects in order to better educate women and healthcare providers, and to design optimal public health strategies.
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Affiliation(s)
- Chelsea K Pike
- Geisel School of Medicine, Dartmouth College, Center for Technology and Behavioral Health, 46 Centerra Parkway, Suite 315, Lebanon, NH, USA.
| | - Michael J Sofis
- Advocates for Human Potential, Inc., Corporate Office, 490-B Boston Post Road, Sudbury, MA, USA.
| | - Alan J Budney
- Geisel School of Medicine, Dartmouth College, Center for Technology and Behavioral Health, 46 Centerra Parkway, Suite 315, Lebanon, NH, USA.
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39
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Hill ML, Loflin M, Nichter B, Norman SB, Pietrzak RH. Prevalence of cannabis use, disorder, and medical card possession in U.S. military veterans: Results from the 2019-2020 National Health and Resilience in Veterans Study. Addict Behav 2021; 120:106963. [PMID: 33964583 DOI: 10.1016/j.addbeh.2021.106963] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/01/2021] [Accepted: 04/23/2021] [Indexed: 10/21/2022]
Abstract
More than half of U.S. states legalized medical or recreational sale and possession of cannabis since the prevalence of cannabis use was last estimated among U.S. military veterans in 2014. To provide updated estimates of the prevalence and correlates of cannabis use, cannabis use disorder (CUD), and medical cannabis card possession in this population, data were analyzed from the 2019-2020 National Health and Resilience in Veterans Study, a nationally representative survey of 4,069 veterans ages 22-99 years who reported on their past-6-month cannabis use, CUD symptoms, and possession of a medical cannabis card. An estimated 11.9% [95% confidence interval (CI) = 10.9-12.9%)] of veterans reported using cannabis, 2.7% (95% CI = 2.3-3.3%) screened positive for CUD, and 1.5% (95% CI = 1.2-2.0%) reported possessing a medical card. Prevalence of cannabis use, CUD, and card possession were higher among younger veterans (use: 20.2%, CUD: 5.6%, card: 2.1%) and those with psychiatric conditions (use: 24.0%-30.0%, CUD: 8.9%-13.0%, card: 3.1%-4.0%). Younger age, alcohol use disorder, and childhood adversity explained a large proportion of variance in cannabis use and CUD, and depression was independently associated with CUD (odds ratio [OR] = 2.76). Physical disability (OR = 3.59), combat veteran status (OR = 2.84), and non-Hispanic black (OR = 0.23) relative to white race/ethnicity most strongly predicted using cannabis with a medical card. The estimated prevalence of cannabis use in veterans-nearly 12%-is higher than the most recently reported estimate (9% in 2014). Veteran cannabis use may be increasing and is particularly prevalent among veterans with psychiatric conditions.
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40
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Brown JD, Rivera Rivera KJ, Hernandez LYC, Doenges MR, Auchey I, Pham T, Goodin AJ. Natural and Synthetic Cannabinoids: Pharmacology, Uses, Adverse Drug Events, and Drug Interactions. J Clin Pharmacol 2021; 61 Suppl 2:S37-S52. [PMID: 34396558 DOI: 10.1002/jcph.1871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/01/2021] [Indexed: 01/15/2023]
Abstract
The purpose of this narrative review is to describe the current use environment of both natural and synthetic cannabinoids while providing context for cannabinoid chemistry and pharmacology. In addition to a long history of recreational and nonmedical use, natural cannabinoids are increasingly used as prescription products, through medical cannabis programs, and as consumer health products. Despite anecdotal safety evidence, cannabis and cannabinoids are pharmacologically complex and pose risks for adverse drug events and drug-drug interactions. Synthetic cannabinoids, particularly agonists of cannabinoid receptors, are more potent than natural cannabinoids and can lead to more severe reactions and medical emergencies. This review provides a summary of approved uses and an overview of mechanisms of action for adverse drug events with natural and synthetic cannabinoids. Clinical considerations for special populations that may be at heightened risk for drug-drug interactions and adverse drug events while using natural or synthetic cannabinoids are examined, and recommendations are provided.
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Affiliation(s)
- Joshua D Brown
- Center for Drug Evaluation & Safety, University of Florida, Gainesville, Florida, USA.,Consortium for Medical Marijuana Clinical Outcomes Research, University of Florida, Gainesville, Florida, USA.,Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | | | | | - Matthew R Doenges
- University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - India Auchey
- University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - Thanh Pham
- University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - Amie J Goodin
- Center for Drug Evaluation & Safety, University of Florida, Gainesville, Florida, USA.,Consortium for Medical Marijuana Clinical Outcomes Research, University of Florida, Gainesville, Florida, USA.,Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, Florida, USA
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41
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Kearney-Ramos T, Haney M. Repetitive transcranial magnetic stimulation as a potential treatment approach for cannabis use disorder. Prog Neuropsychopharmacol Biol Psychiatry 2021; 109:110290. [PMID: 33677045 PMCID: PMC9165758 DOI: 10.1016/j.pnpbp.2021.110290] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 01/22/2021] [Accepted: 02/19/2021] [Indexed: 01/22/2023]
Abstract
The expanding legalization of cannabis across the United States is associated with increases in cannabis use, and accordingly, an increase in the number and severity of individuals with cannabis use disorder (CUD). The lack of FDA-approved pharmacotherapies and modest efficacy of psychotherapeutic interventions means that many of those who seek treatment for CUD relapse within the first few months. Consequently, there is a pressing need for innovative, evidence-based treatment development for CUD. Preliminary evidence suggests that repetitive transcranial magnetic stimulation (rTMS) may be a novel, non-invasive therapeutic neuromodulation tool for the treatment of a variety of substance use disorders (SUDs), including recently receiving FDA clearance (August 2020) for use as a smoking cessation aid in tobacco cigarette smokers. However, the potential of rTMS for CUD has not yet been reviewed. This paper provides a primer on therapeutic neuromodulation techniques for SUDs, with a particular focus on reviewing the current status of rTMS research in people who use cannabis. Lastly, future directions are proposed for rTMS treatment development in CUD, with suggestions for study design parameters and clinical endpoints based on current gold-standard practices for therapeutic neuromodulation research.
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Affiliation(s)
- Tonisha Kearney-Ramos
- New York State Psychiatric Institute, New York, NY, USA; Columbia University Irving Medical Center, New York, NY, USA.
| | - Margaret Haney
- New York State Psychiatric Institute, New York, New York, USA,Columbia University Irving Medical Center, New York, New York, USA
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Gullo MJ, Papinczak ZE, Feeney GFX, Young RM, Connor JP. Precision Mental Health Care for Cannabis Use Disorder: Utility of a bioSocial Cognitive Theory to Inform Treatment. Front Psychiatry 2021; 12:643107. [PMID: 34262487 PMCID: PMC8273258 DOI: 10.3389/fpsyt.2021.643107] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 05/27/2021] [Indexed: 11/21/2022] Open
Abstract
Globally, cannabis is the most frequently used controlled substance after alcohol and tobacco. Rates of cannabis use are steadily increasing in many countries and there is emerging evidence that there is likely to be greater risk due to increased concentrations of delta-9-tetrahydrocannabinol (THC). Cannabis use and Cannabis Use Disorder (CUD) has been linked to a wide range of adverse health outcomes. Several biological, psychological, and social risk factors are potential targets for effective evidence-based treatments for CUD. There are no effective medications for CUD and psychological interventions are the main form of treatment. Psychological treatments based on Social Cognitive Theory (SCT) emphasize the importance of targeting 2 keys psychological mechanisms: drug outcome expectancies and low drug refusal self-efficacy. This mini-review summarizes the evidence on the role of these mechanisms in the initiation, maintenance, and cessation of cannabis use. It also reviews recent evidence showing how these psychological mechanisms are affected by social and biologically-based risk factors. A new bioSocial Cognitive Theory (bSCT) is outlined that integrates these findings and implications for psychological cannabis interventions are discussed. Preliminary evidence supports the application of bSCT to improve intervention outcomes through better targeted treatment.
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Affiliation(s)
- Matthew J. Gullo
- National Centre for Youth Substance Use Research, The University of Queensland, Brisbane, QLD, Australia
- Alcohol and Drug Assessment Unit, Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Zoë E. Papinczak
- National Centre for Youth Substance Use Research, The University of Queensland, Brisbane, QLD, Australia
- Alcohol and Drug Assessment Unit, Princess Alexandra Hospital, Brisbane, QLD, Australia
- School of Psychology, The University of Queensland, Brisbane, QLD, Australia
| | - Gerald F. X. Feeney
- National Centre for Youth Substance Use Research, The University of Queensland, Brisbane, QLD, Australia
- Alcohol and Drug Assessment Unit, Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Ross McD. Young
- National Centre for Youth Substance Use Research, The University of Queensland, Brisbane, QLD, Australia
- Alcohol and Drug Assessment Unit, Princess Alexandra Hospital, Brisbane, QLD, Australia
- Jamieson Trauma Institute, Metro North Health, Herston, QLD, Australia
| | - Jason P. Connor
- National Centre for Youth Substance Use Research, The University of Queensland, Brisbane, QLD, Australia
- Alcohol and Drug Assessment Unit, Princess Alexandra Hospital, Brisbane, QLD, Australia
- Discipline of Psychiatry, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
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Associations of Current and Remitted Cannabis Use Disorder With Health-related Quality of Life and Employment Among US Adults. J Addict Med 2021; 16:286-294. [PMID: 34145190 DOI: 10.1097/adm.0000000000000889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The associations of current and remitted cannabis use disorder (CUD) with health-related quality of life (HRQOL) and employment have not been studied, and we aim to address these gaps. METHODS The 2012-2013 National Epidemiological Survey on Alcohol and Related Conditions III (NESARC III) surveyed a nationally representative sample of non-institutionalized civilian US adults (≥18 years) (n = 36,309 unweighted). Using DSM-5 criteria, adults with current CUD were compared with those with CUD in remission and no history of CUD on standard measures of the mental and physical component scores of HRQOL and of quality-adjusted life years (QALYs) along with employment in the past 12 months. Multivariable-adjusted regression analyses were used to adjust for and examine the role of covariates. RESULTS Overall, 2.5% of the study sample, representing 6.0 million adults nationwide, met criteria for current CUD, and 3.7%, representing 8.8 million adults, met the criteria for CUD in remission. Adults with current or past CUD had lower mental HRQOL and QALYs, as compared to adults who never had CUD. However, these differences were no longer significant when adjusted for behavioral co-morbidities and personal histories. Current CUD was associated with lower odds of being employed (Adjusted odds ratio AOR = 0.76; 95% confidence intervals [CI], 0.60-0.96), but CUD in remission with a greater likelihood of employment (Adjusted odds ratio = 1.53; 95% CI, 1.23-1.91), both as compared to those never experiencing CUD. CONCLUSIONS Both current CUD and past CUD are adversely associated with HRQOL and current CUD with not being employed; Since CUD associations are not independent of comorbidities, treatment must take a wide-ranging approach.
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Guillouard M, Authier N, Pereira B, Soubrier M, Mathieu S. Cannabis use assessment and its impact on pain in rheumatologic diseases: a systematic review and meta-analysis. Rheumatology (Oxford) 2021; 60:549-556. [PMID: 33159797 DOI: 10.1093/rheumatology/keaa534] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/24/2020] [Accepted: 07/24/2020] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVES Despite classic analgesic or effective treatments in rheumatic diseases, such as synthetic DMARDs in RA, patients remain in pain and often turn to non-prescribed pharmacological alternatives, such as cannabis self-therapeutic use. However, this medical use of cannabis has not been thoroughly studied. METHODS We performed a systematic literature review up to June 2020. The incidence of cannabis consumption was calculated by metaproportion. Differences between cannabis users and non-users were expressed as standardized mean differences using the inverse-variance method. We also assessed the effects of cannabis on pain. RESULTS A total of 2900 patients reported cannabis consumption in a sample of 10 873 patients [incidence 40.4% (95% confidence interval (CI): 0.28, 0.54)], and 15.3% (95% CI: 0.07, 0.27) specified that they were currently taking cannabis. Cannabis use was higher in the four fibromyalgia studies [68.2% (95% CI: 0.41, 0.90), n = 611] compared with seven articles concerning RA or lupus [26.0% (95% CI: 0.14, 0.41), n = 8168]. Cannabis consumption was associated with a decrease in pain intensity [VAS pain at baseline 8.2 (2.9) vs 5.6 (3.5) mm over time; pooled effect size -1.75 (95% CI: -2.75, -0.76)]. Cannabis users were younger [58.4 (11.4) vs 63.6 (12.1) years; P <0.001], more often smokers [OR 2.91 (95% CI: 1.84, 4.60)] or unemployed [OR 2.40 (95% CI: 1.31, 4.40)], and had higher pain intensity [5.0 (2.4) vs 4.1(2.6) mm; P <0.001] than non-users. CONCLUSION Nearly 20% of patients suffering from rheumatologic diseases actively consume cannabis, with an improvement in pain. The issue of cannabis use in the management of these patients should be addressed during medical consultation, essentially with cannabis-based standardized pharmaceutical products.
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Affiliation(s)
- M Guillouard
- Rheumatology Department, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
| | - N Authier
- Université Clermont Auvergne, UMR INSERM 1107, CHU, Clermont-Ferrand, France.,Institut ANALGESIA, Faculté de Médecine, Clermont-Ferrand, France.,Observatoire Français des Médicaments Antalgiques (OFMA), French Monitoring Centre for Analgesic Drugs, CHU, Clermont-Ferrand, France
| | - B Pereira
- Biostatistics Unit (Clinical Research Direction), University Hospital of Clermont-Ferrand (CHU), Clermont-Ferrand, France
| | - M Soubrier
- Rheumatology Department, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
| | - S Mathieu
- Rheumatology Department, Clermont-Ferrand University Hospital, Clermont-Ferrand, France
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Bouquet E, Pain S, Eiden C, Jouanjus E, Richard N, Fauconneau B, Pérault-Pochat MC. Adverse events of recreational cannabis use reported to the French addictovigilance network (2012-2017). Br J Clin Pharmacol 2021; 87:3925-3937. [PMID: 34282851 DOI: 10.1111/bcp.14812] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 02/23/2021] [Accepted: 02/25/2021] [Indexed: 12/24/2022] Open
Abstract
AIMS To describe the adverse events (AEs) of recreational cannabis use in France between 2012 and 2017. METHODS AEs related to recreational cannabis use, alone or in combination with alcohol and/or tobacco reported to the French Addictovigilance Network were analysed (excluding cannabidiol and synthetic cannabinoids). RESULTS Reporting of AEs tripled between 2012 (n = 179, 6.3%, 95% confidence interval [CI] = 5.4-7.2) and 2017 (n = 562, 10.1%, 95% CI = 9.3-10.9), reaching 2217 cases. They concerned mainly men (76.4%) and users aged between 18 and 34 years (18-25: 30.9%; 26-34: 26.3%, range: 12-84 years). Cannabis was mainly inhaled (71.6%) and exposure was most often chronic (64.2%). Many types of AEs were reported: psychiatric (51.2%), neurological (15.6%), cardiac (7.8%) and gastrointestinal (7.7%), including unexpected AEs (n = 34, 1.1%). The most common effect was dependence, ranging from 10.1% (95% CI = 7.9-12.3) to 20.3% (95% CI = 17.3-23.2) over the study period. Cannabinoid hyperemesis syndrome (n = 87, 2.8%) emerged from 2015. Deaths accounted for 0.2% of all AEs (4 men and 3 women aged on average 35 years). A chronic pattern of cannabis use was reported in 4 of them (intracranial hypertension in the context of lung cancer, suicide, cerebral haematoma, neonatal death with concomitant chronic alcohol use), while in the other cases the toxicological analysis identified cannabis use (ruptured aneurysm and unknown aetiology). CONCLUSION This study showed a multitude of AEs related to recreational cannabis use, including unexpected AEs and deaths. It highlights the problem of dependence and the emergence of cannabinoid hyperemesis syndrome.
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Affiliation(s)
- Emilie Bouquet
- Addictovigilance Center, Department of Clinical Pharmacology, Poitiers University Hospital, France
| | - Stéphanie Pain
- Addictovigilance Center, Department of Clinical Pharmacology, Poitiers University Hospital, France.,INSERM U-1084, Experimental and Clinical Neurosciences Laboratory, University of Poitiers, Poitiers, France
| | - Céline Eiden
- Addictovigilance Center, Montpellier University Hospital, France
| | - Emilie Jouanjus
- Addictovigilance Center, Toulouse University Hospital, France
| | - Nathalie Richard
- French National Agency for Medicines and Health Products Safety (ANSM), Saint-Denis, France
| | - Bernard Fauconneau
- Addictovigilance Center, Department of Clinical Pharmacology, Poitiers University Hospital, France
| | - Marie-Christine Pérault-Pochat
- Addictovigilance Center, Department of Clinical Pharmacology, Poitiers University Hospital, France.,INSERM U-1084, Experimental and Clinical Neurosciences Laboratory, University of Poitiers, Poitiers, France
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Genrich G, Zeller C, Znoj HJ. Interactions of protective behavioral strategies and cannabis use motives: An online survey among past-month users. PLoS One 2021; 16:e0247387. [PMID: 33647024 PMCID: PMC7920385 DOI: 10.1371/journal.pone.0247387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 02/05/2021] [Indexed: 11/19/2022] Open
Abstract
Given the constant high prevalence of cannabis use and cannabis dependence, it is important to determine protective behaviors on the individual level, which buffer the effects of risk factors. Protective Behavioral Strategies for Marijuana (PBSM) have been identified to play an important role for harm reduction in adolescent and young adult users. In the present study, we analyzed if PBSM moderate the effects of use motives (captured by the Marijuana Motives Measure, MMM) on the severity of dependence beyond the effects of age, gender, education and cannabis use frequency. We used confirmatory factor analysis (CFA) to validate the German versions of PBSM and MMM. Data was gathered in an online survey distributed to randomly chosen households in the city of Bern in the German speaking part of Switzerland. The final sample comprised 362 past-month users. Results showed negative correlations between PBSM and cannabis use frequency and severity of dependence. The only motives being correlated with severity of dependence were coping and routine, beyond frequency of use. PBSM significantly moderated the effect only of routine motives on the severity of dependence. However, only a few cases who used PBSM extensively were affected. PBSM appear to be an important factor to reduce harm among past-month users but not among those with dependent use patterns, e.g. coping and routine users. Clinical implications are discussed. The routine factor adds significantly to the MMM and should be implemented and improved in future studies. PBSM as well as the MMM can be used in future studies in German speaking populations.
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Affiliation(s)
- Gregor Genrich
- Department of Health Psychology and Behavioral Medicine, University of Bern, Bern, Switzerland
| | - Céline Zeller
- Department of Health Psychology and Behavioral Medicine, University of Bern, Bern, Switzerland
| | - Hans Jörg Znoj
- Department of Health Psychology and Behavioral Medicine, University of Bern, Bern, Switzerland
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Abstract
Cannabis use disorder (CUD) is an underappreciated risk of using cannabis that affects ~10% of the 193 million cannabis users worldwide. The individual and public health burdens are less than those of other forms of drug use, but CUD accounts for a substantial proportion of persons seeking treatment for drug use disorders owing to the high global prevalence of cannabis use. Cognitive behavioural therapy, motivational enhancement therapy and contingency management can substantially reduce cannabis use and cannabis-related problems, but enduring abstinence is not a common outcome. No pharmacotherapies have been approved for cannabis use or CUD, although a number of drug classes (such as cannabinoid agonists) have shown promise and require more rigorous evaluation. Treatment of cannabis use and CUD is often complicated by comorbid mental health and other substance use disorders. The legalization of non-medical cannabis use in some high-income countries may increase the prevalence of CUD by making more potent cannabis products more readily available at a lower price. States that legalize medical and non-medical cannabis use should inform users about the risks of CUD and provide information on how to obtain assistance if they develop cannabis-related mental and/or physical health problems.
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Lees R, Hines LA, D'Souza DC, Stothart G, Di Forti M, Hoch E, Freeman TP. Psychosocial and pharmacological treatments for cannabis use disorder and mental health comorbidities: a narrative review. Psychol Med 2021; 51:353-364. [PMID: 33536109 DOI: 10.1017/s0033291720005449] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Cannabis is the most widely used illicit drug worldwide, and it is estimated that up to 30% of people who use cannabis will develop a cannabis use disorder (CUD). Demand for treatment of CUD is increasing in almost every region of the world and cannabis use is highly comorbid with mental disorders, where sustained use can reduce treatment compliance and increase risk of relapse. In this narrative review, we outline evidence for psychosocial and pharmacological treatment strategies for CUD, both alone and when comorbid with psychosis, anxiety or depression. Psychosocial treatments such as cognitive behavioural therapy, motivational enhancement therapy and contingency management are currently the most effective strategy for treating CUD but are of limited benefit when comorbid with psychosis. Pharmacological treatments targeting the endocannabinoid system have the potential to reduce cannabis withdrawal and cannabis use in CUD. Mental health comorbidities including anxiety, depression and psychosis hinder effective treatment and should be addressed in treatment provision and clinical decision making to reduce the global burden of CUDs. Antipsychotic medication may decrease cannabis use and cannabis craving as well as psychotic symptoms in patients with CUD and psychosis. Targeted treatments for anxiety and depression when comorbid with CUD are feasible.
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Affiliation(s)
- Rachel Lees
- Addiction and Mental Health Group (AIM), Department of Psychology, University of Bath, Bath, UK
| | - Lindsey A Hines
- Population Health Science, Bristol Medical School, University of Bristol, Bristol, UK
| | - Deepak Cyril D'Souza
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT, USA
| | | | - Marta Di Forti
- Social, Genetic and Developmental Psychiatry Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - Eva Hoch
- Cannabinoid Research and Treatment Group, Department of Psychiatry and Psychotherapy, University Hospital, LMU Munich, Munich, Germany
- Department of Psychiatry, Ludwig Maximilian University of Munich, Munich, Germany
| | - Tom P Freeman
- Addiction and Mental Health Group (AIM), Department of Psychology, University of Bath, Bath, UK
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Borodovsky JT, Sofis MJ, Grucza RA, Budney AJ. The importance of psychology for shaping legal cannabis regulation. Exp Clin Psychopharmacol 2021; 29:99-115. [PMID: 32437193 PMCID: PMC7679279 DOI: 10.1037/pha0000362] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Different patterns of cannabis use can be traced directly back to different interactions between 2 types of variables: pharmacological and environmental. As legal cannabis expands in the U.S. and around the world, state and national regulatory agencies are gaining control over these variables. Specifically, regulatory agencies are increasingly capable of altering (a) the pharmacological properties of cannabis products and (b) the way these products are distributed to the population. Consequently, cannabis regulatory agencies are in a unique position to use evidence from psychological science to alter cannabis consumption patterns in ways that mitigate potential harm to public health. However, most state-level legal cannabis regulatory systems in the U.S. are not yet evidence-based or public health-oriented. This applied review and commentary draws on evidence from the psychological science literature to help regulators better understand the types of behaviors they must address and guide empirically supported regulation of THC-laden cannabis, whether used putatively for medical or recreational reasons. This review is organized into 3 parts that correspond to the 3 primary agents within the cannabis regulation ecosystem: (a) the cannabis consumer, (b) the cannabis industry, and (c) the cannabis regulatory agency. Within this structure, the review addresses critical psychological variables that drive cannabis consumer and industry behaviors and discusses how regulatory agencies can use this information to protect public health. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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Affiliation(s)
- Jacob T Borodovsky
- Department of Psychiatry, Washington University School of Medicine in St. Louis
| | - Michael J Sofis
- Center for Technology and Behavioral Health, Dartmouth Geisel School of Medicine
| | - Richard A Grucza
- Department of Psychiatry, Washington University School of Medicine in St. Louis
| | - Alan J Budney
- Center for Technology and Behavioral Health, Dartmouth Geisel School of Medicine
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López-Pelayo H, Campeny E, Oliveras C, Rehm J, Manthey J, Gual A, Balcells-Olivero MDLM. Early, Chronic, and Acute Cannabis Exposure and Their Relationship With Cognitive and Behavioral Harms. Front Psychiatry 2021; 12:643556. [PMID: 34434125 PMCID: PMC8381725 DOI: 10.3389/fpsyt.2021.643556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 07/08/2021] [Indexed: 11/22/2022] Open
Abstract
Background: Cannabis is the third most consumed drug worldwide. Thus, healthcare providers should be able to identify users who are in need for an intervention. This study aims to explore the relationship of acute, chronic, and early exposure (AE, CE, and EE) to cannabis with cognitive and behavioral harms (CBH), as a first step toward defining risky cannabis use criteria. Methods: Adults living in Spain who used cannabis at least once during the last year answered an online survey about cannabis use and health-related harms. Cannabis use was assessed in five dimensions: quantity on use days during the last 30 days (AE), frequency of use in the last month (AE), years of regular use (YRCU) (CE), age of first use (AOf) (EE), and age of onset of regular use (AOr) (EE). CBH indicators included validated instruments and custom-made items. Pearson correlations were calculated for continuous variables, and Student's t-tests for independent samples were calculated for categorical variables. Effect sizes were calculated for each of the five dimensions of use (Cohen's d or r Pearson correlation) and harm outcome. Classification and Regression Trees (CART) analyses were performed for those dependent variables (harms) significantly associated with at least two dimensions of cannabis use patterns. Lastly, logistic binary analyses were conducted for each harm outcome. Results: The mean age of participants was 26.2 years old [standard deviation (SD) 8.5]. Out of 2,124 respondents, 1,606 (75.6%) reported at least one harm outcome (mean 1.8 and SD 1.5). In our sample, using cannabis on 3 out of 4 days was associated with an 8-fold probability of scoring 4+ on the Severity Dependence Scale (OR 8.33, 95% CI 4.91-14.16, p <0.001), which is indicative of a cannabis use disorder. Also, a start of regular cannabis use before the age of 25 combined with using cannabis at least once per month was associated with a higher probability of risky alcohol use (OR 1.33, 95% CI 1.12-1.57, p = 0.001). Besides, a start of regular cannabis use before the age of 18 combined with a period of regular use of at least 7.5 years was associated with a higher probability of reporting a motor vehicle accident (OR 1.81, 95% CI 1.41-2.32, p < 0.0001). Results were ambiguous regarding the role that age of first use and milligrams of THC per day of use might play regarding cannabis-related harms. Conclusions: The relationship among AE, CE, and EE with CBH indicators is a complex phenomenon that deserves further studies. The pattern of cannabis use should be carefully and widely evaluated-(not just including frequency but also other dimensions of pattern of use)-in research (preferably in longitudinal studies) to assess cannabis-related harms.
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Affiliation(s)
- Hugo López-Pelayo
- Grup Recerca en Addiccions Clinic (GRAC), Institut de Recerca Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Psychiatry Department, Neuroscience Institute, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Eugènia Campeny
- Grup Recerca en Addiccions Clinic (GRAC), Institut de Recerca Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Clara Oliveras
- Grup Recerca en Addiccions Clinic (GRAC), Institut de Recerca Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Psychiatry Department, Neuroscience Institute, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Jürgen Rehm
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, Dalla Lana School of Public Health, University of Toronto (UofT), Toronto, ON, Canada.,Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Dresden, Germany.,Department of International Health Projects, Institute for Leadership and Health Management, I.M. Sechenov First Moscow State Medical University, Moscow, Russia
| | - Jakob Manthey
- Faculty of Psychology, Institute of Clinical Psychology and Psychotherapy, Technical University Dresden, Dresden, Germany.,Department of Psychiatry and Psychotherapy, Center for Interdisciplinary Addiction Research of Hamburg University (ZIS), University Medical Center Hamburg-Eppendorf (UKE), Hamburg, Germany.,Department of Psychiatry, Medical Faculty, University of Leipzig, Leipzig, Germany
| | - Antoni Gual
- Grup Recerca en Addiccions Clinic (GRAC), Institut de Recerca Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Psychiatry Department, Neuroscience Institute, Hospital Clínic de Barcelona, Barcelona, Spain
| | - Maria de Las Mercedes Balcells-Olivero
- Grup Recerca en Addiccions Clinic (GRAC), Institut de Recerca Biomèdica August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Psychiatry Department, Neuroscience Institute, Hospital Clínic de Barcelona, Barcelona, Spain
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