The association between smoking prevalence and eating disorders: a systematic review and meta-analysis

Eating Disorders and Later Incidence of Cancer: A Nationwide Longitudinal Study in Denmark

Background

We examined the incidence of cancer types among individuals with eating disorders (EDs).

Methods

A nationwide longitudinal study of 6,807,731 individuals born between 1940 and 2015 was conducted using the Danish National Registries. Cox models with ED diagnosis as exposure and cancer diagnoses as outcomes were used to estimate hazard ratios (HRs) and 95% CIs while adjusting for sex, birth year, and comorbidities. The primary analysis comprised ICD-8 and ICD-10 codes for anorexia nervosa (AN) and other ED (OED). The secondary analysis comprised ICD-10 codes and included AN, bulimia nervosa (BN), and eating disorders not otherwise specified (EDNOS).

Results

AN was associated with a reduced incidence of breast cancer while adjusting for sex and birth year (HR, 0.80; 95% CI, 0.66-0.97) and elevated incidence of respiratory (HR, 1.59; 95% CI, 1.24-2.04), cervical (HR, 1.45; 95% CI, 1.05-1.98), and esophageal (HR, 4.77; 95% CI, 2.82-8.06) cancers. OED was associated with an elevated incidence of respiratory (HR, 1.57; 95% CI, 1.20-2.06) and cervical (HR, 1.60; 95% CI, 1.20-2.14) cancers. ICD-10-only analyses confirmed the association of AN with reduced incidence of breast cancer and elevated incidence of respiratory and cervical cancers. BN was associated with reduced incidence of breast cancer in sensitivity analysis. EDNOS was associated with reduced incidence of breast cancer and elevated incidence of respiratory and cervical cancers.

Conclusions

All EDs were associated with a reduced incidence of breast cancer. All EDs except BN were associated with a higher incidence of respiratory and cervical cancers. AN was associated with a higher incidence of esophageal cancer.

Determining the Importance of Lifestyle Risk Factors in Predicting Binge Eating Disorder After Bariatric Surgery Using Machine Learning Models and Lifestyle Scores

BACKGROUND

This study was conducted to assess the association between lifestyle risk factors (LRF) and odds of binge eating disorder (BED) 2 years post laparoscopic sleeve gastrectomy (LSG) using lifestyle score (LS) and machine learning (ML) models.

METHODS

In the current study, 450 individuals who had undergone LSG 2 years prior to participation were enrolled. BED was assessed using BES questionnaire. The collected data for LRF included smoking, alcohol consumption, physical activity (PA), fruit and vegetable intake, overweight/obesity, and percentage excess weight loss (EWL%). ML models included: logistic regression (LG), KNN, decision tree (DT), random forest (RF), SVM, XGBoost, and deep learning or artificial neurol network (ANN). Additionally, accumulative LRF was assessed using LS.

RESULTS

One hundred and twenty-two subjects (26.1%) met the criteria for BED 2 years after LSG. Participants who were in the highest quartile of the lifestyle score (nearly worst) had significantly three times higher odds of BED compared to the lowest quartile (nearly optimal) (p trend = 0.01). Furthermore, RF, LG, SVM, and ANN had the highest accuracy (about 75%) in predicting BED compared to other ML models (between 60 and 72%). Among the lifestyle risk factors, insufficient PA, lower vegetable consumption, a higher level of BMI, and lower EWL% were independently associated with BED (p < 0.05).

CONCLUSIONS

Our findings indicate that poor lifestyle patterns are associated with the development of BED, in contrast to non-BED individuals. Given the prevalence of this disorder among LSG participants, lifestyle risk factors must receive special attention after BS.

The collateral effects of the COVID-19 pandemic: A gender-specific systematic review of disordered eating behaviour in the general population

OBJECTIVE

The COVID-19 pandemic initiated public health measures, impacting mental health and exacerbating disordered eating behaviours (DEB). This study aims to fill gaps in understanding DEB in the general population during the pandemic, emphasising gender dynamics and the experiences of gender and/or sexual minority (SGM) individuals.

METHOD

A systematic literature review followed PRISMA guidelines to investigate DEB during the pandemic, focusing on gender-sensitive analyses and SGM populations. Outcomes from the included studies were synthesised to identify patterns and associations related to DEB, particularly considering gender dynamics and SGM experiences.

RESULTS

Significant gender associations with DEB were observed, with women consistently exhibiting higher scores. SGM populations also showed elevated DEB symptoms. Longitudinal studies indicated changes in DEB over time, with some decreases observed among men.

CONCLUSIONS

The review underscores significant gender differences in DEB during the pandemic, with women exhibiting higher symptom levels. Lockdown measures had nuanced impacts on DEB, varying across studies. Various factors including pandemic-related stressors influenced DEB. Consideration of these factors can inform tailored interventions for DEB in the general population. Overall, the review enhances our understanding of how gender intersects with the pandemic's impact on DEB, emphasising the need for diverse approaches to address these behaviours.

Current tobacco smoking prevalence in individuals living with eating disorders: A meta-analysis and meta-regression study

OBJECTIVES

A growing body of evidence suggests a potential association between tobacco dependence and eating disorders. Given the appetite-suppressing effects of tobacco, its use may be linked to weight control behaviors among individuals with eating disorders. This study aims to review the prevalence of current smoking among individuals diagnosed with Anorexia Nervosa (AN), Bulimia Nervosa (BN), or Binge Eating Disorder (BED).

METHODS

A comprehensive literature search was conducted across international scientific databases to identify eligible studies. Smoking prevalence rates were extracted and aggregated using random-effects models. Meta-regression and sensitivity analyses were performed to explore factors influencing prevalence rates.

RESULTS

The final analysis included 30 studies, encompassing 2970 individuals with AN, 5032 with BN, and 7704 with BED. The pooled prevalence of current smoking was 23.4 % for AN, 19.3 % for BN (adjusted for publication bias), and 11.9 % for BED. Meta-regression revealed that studies with higher proportions of female participants and those using non-DSM diagnostic tools reported significantly lower smoking prevalence in BED. Additionally, higher smoking prevalence in BED was observed in North America and in studies with more recent publication years. No significant covariates were identified in the meta-regression models for AN and BN. Sensitivity analyses confirmed the robustness of these findings.

CONCLUSION

This meta-analysis highlights elevated current smoking rates among individuals with AN and BN compared to the general population, particularly among women. Smoking may serve as a weight control strategy in these groups, underscoring the need for integrated smoking cessation interventions within eating disorder treatment. The findings also reveal distinct regional and demographic influences on smoking behavior in BED, suggesting a nuanced approach to prevention and intervention across eating disorder subtypes.

Emotional processing in binge drinking, tobacco use disorder and their comorbidity in youth: A preregistered PRISMA scoping review

BACKGROUND

Binge drinking (BD) and tobacco use disorder (TUD) are prevalent among youth, with significant social and health implications. However, research into the emotional impairments associated with BD and TUD during adolescence is sparse and lacks integration within a comprehensive model of emotional processes. Moreover, the impact of comorbid BD and TUD on emotional deficits remains largely unexplored. We propose the first review focused on the variation of emotional deficits in BD, TUD, or their comorbidity among adolescents and we systematically explore differences across various emotional abilities.

METHODS

Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews guidelines (PRISMA-ScR), we conducted a preregistered review of existing literature on emotional processing impairments in BD and/or TUD among adolescents. From 481 papers initially identified, 7 were included in this review. Additionally, we proposed experimental avenues for future research based on identified shortcomings in current literature.

RESULTS

Our scoping review indicates that emotional deficits are likely prevalent in both BD and TUD populations, affecting emotional appraisal/identification, response, and regulation. However, further investigation is necessary to ascertain the magnitude and scope of these deficits in adolescents and adults, as well as to delineate the distinct or combined influence of BD and TUD on emotional disturbances.

CONCLUSION

While some emotional deficits are apparent, we contend that examining emotional deficits in BD and TUD separately, as well as together, would offer a more comprehensive understanding of their nature and inform the development of novel treatment strategies.

The Presence of Food Addiction in Patients with Binge Eating Disorder Was Associated with Higher Weight, Poor Body Composition Outcomes, Lower Serum Level of Magnesium and Higher Ferritin 2 Years Post-LSG Surgery

BACKGROUND

This study examined the presence of food addiction (FA) in patients with binge eating disorder (BED) 2 years after laparoscopic sleeve gastrectomy (LSG) and explored its association with some minerals, ferritin, weight loss and, body composition outcomes.

MATERIALS AND METHODS

In this study, 120 patients with BED who had undergone LSG 2 years prior to participation were enrolled. BED was assessed using Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria and presence of FA was assessed using the Yale Food Addiction Scale (YFAS). The collected data included general characteristic, food intake, physical activity, weight loss percentage, body composition measurements such as fat mass (FM) and fat-free mass (FFM), as well as serum level of magnesium, zinc, iron, and ferritin.

RESULTS

Fifty individuals with BED met the criteria for FA disorder (41.66%). BED patients who had FA had significantly higher weight (P = 0.01) compared to those without FA. Regarding body composition changes, the finding reveals that patients with BED + FA (vs. only-BED) had a significantly lower FM loss percentage (p = 0.04) and higher FFM loss percentage (p = 0.04). The BED patients with FA had significantly lower levels of magnesium (p = 0.02) and a higher level of ferritin (p = 0.04) compared to those without FA at second year after LSG.

CONCLUSION

The presence of FA in patients with BED was associated with higher weight, poor body composition outcomes, lower serum level of magnesium, and higher ferritin two years post-LSG surgery.

Relationship between eating attitudes, depression, and insight in schizophrenic patients with and without type 2 diabetes mellitus: a comparative study in Guangdong, China

Background

Schizophrenia, a severe mental disorder, is often complicated by Type 2 Diabetes Mellitus (T2DM), which can further impact patients' psychological health. This study investigated the differences in eating attitudes, depression, and insight between schizophrenic patients with and without comorbid T2DM and explored the correlations among these factors to provide empirical support for clinical interventions.

Methods

This case-control study was conducted in Guangdong Province, China. From December 2022 to May 2023, a total of 300 hospitalized patients with schizophrenia (92 with comorbid T2DM and 208 without T2DM) were recruited. Data were collected using the Personal Information Form, Eating Attitudes Test (EAT-26), Hamilton Depression Scale (HAMD), and Insight and Treatment Attitudes Questionnaire (ITAQ). Statistical analyses, including t-tests, ANOVA, and multiple linear regression, were performed to examine differences and predictive factors of eating attitudes among patients. This study was approved by the Ethics Committee of the Affiliated Brain Hospital of Guangzhou Medical University (approval number: 2020028), and written informed consent was obtained from all participants.

Results

Patients with schizophrenia and comorbid T2DM exhibited significantly higher risks of eating disorders (EAT-26: 12.54 ± 9.77 vs. 9.07 ± 7.90, P=0.003), more severe depression (HAMD: 14.71 ± 7.36 vs. 11.80 ± 6.04, P=0.001), and poorer insight (ITAQ: 10.46 ± 6.01 vs. 12.16 ± 6.09, P=0.025) compared to those without T2DM. Regression analysis revealed that gender, weekly exercise frequency, depression, and insight were significant predictors of eating attitudes among patients with T2DM. For patients without T2DM, weekly exercise frequency, smoking status, and insight were significant predictors.

Conclusion

Schizophrenic patients with comorbid T2DM are facing increasing risks related to eating attitudes, depression, and insight which highlight the need for targeted interventions. Regular psychological assessment and tailored support strategies might improve their mental health and quality of life. Future research should focus on longitudinal studies to clarify causal relationships and develop more effective interventions.

Pharmacological Treatment of Binge Eating Disorder and Frequent Comorbid Diseases

Binge eating disorder (BED) is the most common specific eating disorder (ED). It is frequently associated with attention deficit hyperactivity disorder (ADHD), depression, bipolar disorder (BD), anxiety disorders, alcohol and nicotine use disorder, and obesity. The aim of this narrative review was to summarize the evidence for the pharmacological treatment of BED and its comorbid disorders. We recommend the ADHD medication lisdexamfetamine (LDX) and the antiepileptic and antimigraine drug topiramate for the pharmacological treatment of BED. However, only LDX is approved for the treatment of BED in some countries. Medications to treat diseases frequently comorbid with BED include atomoxetine and LDX for ADHD; citalopram, fluoxetine, sertraline, duloxetine, and venlafaxine for anxiety disorders and depression; aripiprazole for manic episodes of BD; lamotrigine, lirasidone and lumateperone for depressive episodes of BD; naltrexone for alcohol use disorder; bupropion for nicotine use disorder; and liraglutide, semaglutide, and the combination of bupropion and naltrexone for obesity. As obesity is a frequent health consequence of BED, weight gain-inducing medications, such as the atypical antipsychotics olanzapine or clozapine, the novel antidepressant mirtazapine and tricyclic antidepressants, and the mood stabilizer valproate should be avoided where possible. It is currently unclear whether the novel and promising glucagon, glucose-dependent insulinotropic polypeptide (GIP), and glucagon-like peptide 1 (GLP-1) receptor agonists like tirzepatide and retatrutide help with BED and its comorbidities. However, these compounds have been reported to reduce binge eating in individuals with obesity or overweight.

Associations between disordered eating behaviour and sexual behaviour amongst emerging adults attending a tertiary education institution in Coastal Kenya

BACKGROUND

Sexual behavior (SB) is a well-documented pathway to HIV acquisition in emerging adults and remains common amongst African emerging adults. Previous research in high-income countries indicates a correlation between disordered eating behavior (DEB) and engaging in sexual behaviors. We aimed to describe the relationship between DEB and SB amongst emerging adults attending a tertiary educational institution at the Kenyan Coast.

METHODS

We applied a cross-sectional design nested in a young adults' cohort study. Eligibility included sexually active emerging adults aged 18-24 years. Three DEBs (emotional, restrained and external eating) were assessed using the Dutch Eating Behavior Questionnaire and analysed using exploratory factor analysis. Seven SB indicators were assessed: non-condom use, casual sex, multiple sex partners, transactional sex, group sex, age-disparate relationship and anal sex, and grouped into low vs. high SB using latent class analysis. Logistic regression was used to assess the association between DEB and SB.

RESULTS

Of 273 eligible participants (female, n = 110 [40.3%]), the mean of emotional, restrained and external eating was 1.9 [0.6], 2.0 [0.6] and 3.0 [0.5] respectively. Overall, 57 (20.9%) were grouped into the latent high SB class. Emotional (Adjusted odds ratio, AOR [95% confidence interval, CI]: 1.0 [0.9-1.0], p = 0.398), restrained (AOR, 1.0 [CI: 0.9-1.1], p = 0.301) and External (AOR, 1.0 [CI: 0.8-1.2], p = 0.523) eating were not independently associated with latent high SB.

CONCLUSION

There was no significant association between DEB and SB in this study sample. In low- and middle-income countries like Kenya, interventions targeted at DEB among emerging adults towards controlling SB are unnecessary.

Bidirectional relationships between nicotine vaping and maladaptive eating behaviors among young adults

Background

Past research indicates that young adult cigarette smokers are at risk of engaging in maladaptive eating behaviors (MEBs); however, whether this relationship extends to nicotine vaping is unclear. The current study assessed bidirectional associations between four types of MEBs and nicotine vaping among young adults.

Methods

1,303 young adults (20.5 ± 2.3 years; 63 % female) from a public, urban university were recruited and completed online surveys at six-month intervals from spring 2021 (W1) to spring 2023 (W5). Past 30-day nicotine vaping and four types of MEBs (susceptibility to external cues, emotional eating, routine restraint, and compensatory restraint) were evaluated.

Results

Longitudinal cross-lagged models examined the bidirectional relationships between past 30-day nicotine vaping and each type of MEB across five waves. Nicotine vaping predicted both susceptibility to external cues (β = 0.10, p <.05; Wave 2 to 3) and emotional eating (β = 0.08, p <.05; Wave 1 to 2). A significant cross-lag regression (Wave 4 to 5) showed nicotine vaping predicted to routine restraint (β = 0.08, p <.05), and routine restraint predicted to nicotine vaping (β = 0.12, p <.05).

Conclusions

Results indicated that nicotine vaping predicted MEBs; however, the type of MEB differed across waves, which may have been due to the COVID-19 pandemic context. Nicotine vaping predicted to MEBs reflecting vulnerability to the external environment and emotion regulation during a period of heightened restrictions, whereas later when pandemic restrictions had ceased nicotine vaping predicted only to routine restraint. Integrating research and practice on nicotine vaping and MEBs may inform public health efforts to decrease co-occurring health-risks in young adulthood.

Eating Disorder Symptomatology Among Young Adult Cigarette and E-Cigarette Users

Objective: Tobacco use is elevated among individuals with eating disorders (EDs). Yet, further research is needed to understand associations between cigarette and e-cigarette use patterns and ED symptomatology. To gain a more comprehensive understanding of tobacco use and EDs, this study characterized ED symptomatology and tobacco use patterns, including exclusive cigarette use, e-cigarette use, dual use, and nonuse. Method: Young adults aged 18-24 years who self-reported exclusive cigarette, e-cigarette, dual, or nonuse (N = 2500) were recruited via Lucid, an online survey management company. Participants completed questionnaires assessing body dissatisfaction, global ED psychopathology, binge eating and self-induced vomiting frequency, and demographics. ED diagnostic groups included: anorexia nervosa (AN), bulimia spectrum eating disorders (BSED), atypical AN, and night eating syndrome (NES). Results: Multinomial logistic models revealed those with AN were more likely to be dual users, those with atypical AN were more likely to be exclusive e-cigarette users, and participants with a BSED or NES were more likely to be exclusive e-cigarette or dual users, compared to those without an ED. General linear models suggested body dissatisfaction and global ED psychopathology were higher among exclusive e-cigarette and dual users, while binge eating and self-induced vomiting frequencies were greater among all tobacco use groups compared to nonusers. Discussion: Our findings suggest young adults with ED symptomatology were more likely to be users of e-cigarettes exclusively or dual users. It will be necessary to examine how these associations manifest using longitudinal and clinical populations in future research.

Intersectionality of demographic characteristics in self-reported anorexia nervosa, bulimia nervosa, and probable eating disorders among college students

OBJECTIVE

To investigate associations between identity intersectionality, with a primary focus on minority identity, and probable eating disorders (EDs) within the US college student population.

METHOD

Data consisting of n = 414,299 college students' responses to the American College Health Association's National College Health Assessment between fall 2015 and spring 2019 were utilized for this study. Overall and stratified adjusted odds ratios (aORs) were used to assess the association between different facets of identity (i.e., race/ethnicity, gender identity, and sexual orientation) and probable EDs.

RESULTS

Among all, in our analytic sample, 7.15% reported a probable ED. Interactions between all three identity variables were significant, and thus stratified odds ratios were evaluated. Transgender men were significantly more likely to report probable ED than cisgender male peers within the following racial/ethnic groups: non-Hispanic White (aOR: 3.33; 95% CI: 2.79, 3.96; p < .0001), non-Hispanic Black (aOR: 3.29; 95% CI: 1.72, 6.28; p = .0003), Hispanic (aOR: 2.31; 95% CI: 1.55, 3.43; p < .0001), Asian or Pacific Islander (aOR: 2.19; 95% CI: 1.45, 3.30; p = .0002), Biracial or Multicultural (aOR: 3.36; 95% CI: 2.17, 5.22; p < .0001), and other (aOR: 4.19; 95% CI: 2.25, 7.79; p < .0001).

CONCLUSIONS

This study underscores the importance of increasing our understanding of interactions between marginalized identities and the ways in which minority identity informs ED risk.

PUBLIC SIGNIFICANCE

The impact of multiple marginalized identities on ED outcomes is not well understood. Our study expands on previous ACHA-NCHA studies by addressing identity intersectionality, looking at more than one identity at a time (i.e., specifically race/ethnicity, gender identity, and sexual orientation). Our results contribute unique risk profiles for students who identify with multiple marginalized groups. Further, they indicate that that these associations vary based on the compounded effect of the demographic factors considered.

Associations of broad eating disorder symptoms with later alcohol problems in Finnish adult twins: A nationwide 10-year follow-up

OBJECTIVE

Eating disorders are associated with subsequent alcohol problems, but it is not known whether this association also extends to broader eating disorder symptoms not captured by clinical diagnoses. We assessed the longitudinal association of broad eating disorder symptoms with alcohol problems in a nationwide twin sample (FinnTwin16).

METHODS

Finnish women (N = 1905) and men (N = 1449) self-reported their eating disorder symptoms using the Eating Disorder Inventory-2 Bulimia, Drive for Thinness, and Body Dissatisfaction subscales at the mean age of 24.4 years in 2000-2003. A subsample of participants also completed items on drive for muscularity, height dissatisfaction, and muscle-enhancing supplement use. Alcohol problems were assessed 10 years later at the age of 34.1 in 2010-2012 with the Rutgers Alcohol Problem Index.

RESULTS

Eating disorder symptoms were associated with later alcohol problems (odds ratio per point increase 1.02-1.18). Bulimia showed stronger associations among men than women (p for interaction .012). Drive for muscularity and height dissatisfaction were also associated with later alcohol problems, but supplement use was not. When accounting for baseline alcohol problems, only Bulimia (among women and men) and Drive for Thinness (among men) were significantly associated with later alcohol problems. Bulimia was also significantly associated with later alcohol problems in within-twin-pair analyses among dizygotic twins, but not among monozygotic twins.

DISCUSSION

In a longitudinal setting, eating disorder symptoms were associated with later alcohol problems. Bulimic symptoms were a stronger risk factor for men than women. These associations may be attributable to baseline alcohol problems, childhood environment and genetic liability.

PUBLIC SIGNIFICANCE

This study found that both young adult women and men with broad eating disorder symptoms are at a higher risk of alcohol-related problems than those without such symptoms. Men with bulimic symptoms were at a particularly high risk. These findings emphasize the need for better prevention and treatment of disordered eating, body image concerns and alcohol problems for both young adult women and men.

Irritable bowel syndrome (IBS) among Lebanese adults: unidentified IBS and associated factors

BACKGROUND

Irritable bowel syndrome (IBS) is one of the most frequent functional gastrointestinal disorders, but the condition is still underdiagnosed. The high of rate of unidentified IBS by patients can be related to different factors. The aim of this study is to assess the rate of unidentified IBS among Lebanese adults and investigate the role of socio-demographic factors, anxiety, depression, insomnia and eating attitudes on IBS diagnosis.

METHODS

A cross-sectional study was conducted among Lebanese adults older than 18 years between June 2022 and December 2022, using a self-reporting questionnaire distributed via social media.

RESULTS

A total of 425 participants was enrolled in the study with around 184 (46.8%) having a possible unidentified IBS. Higher psychological distress (aOR = 1.07) and insomnia severity (aOR = 1.08) were significantly associated with higher odds of having possible unidentified IBS whereas a higher household crowding index (aOR = 0.67) was significantly associated with lower odds of having possible IBS. The correlation of eating attitudes with cigarette smoking (aOR = 1.33; p = .025; 95% CI 1.04; 1.70) and insomnia severity with cigarette smoking (aOR = .89; p = .023; 95% CI .80; .98) were significantly associated with the presence of possible IBS. In nonsmokers, higher psychological distress (aOR = 1.07) and insomnia severity (aOR = 1.10) were significantly associated with higher odds of having possible IBS. In smokers, higher BMI (aOR = .78) was significantly associated with lower odds of having possible IBS, whereas higher eating attitudes scores (more inappropriate eating) (aOR = 1.40) were significantly associated with higher odds of having possible IBS.

CONCLUSION

The study highlighted the implication of raising awareness about IBS among the Lebanese population to promote early diagnosis and minimize the rate of unidentified IBS by patients. Initiation of appropriate treatment plans, tailored symptomatic management approach, and diet programs should be highly encouraged.

The absence of association between anorexia nervosa and smoking: converging evidence across two studies

Previous studies have found increased smoking prevalence amongst adults with anorexia nervosa (AN) compared to the general population. The current investigation explored bidirectional associations between AN and smoking behaviour (initiation and heaviness), to address questions surrounding causation. In Study One, logistic regression models with variance robust standard errors assessed longitudinal associations between AN and smoking, using data from adolescent participants of the Avon Longitudinal Study of Parents and Children (N = 5100). In Study Two, two-sample Mendelian randomisation (MR) tested possible causal effects using summary statistics from publicly available genome-wide association studies (GWAS). Study One provided no clear evidence for a predictive effect of AN on subsequent smoking behaviour, or for smoking heaviness/initiation predicting later AN. MR findings did not support causal effects between AN and smoking behaviour, in either direction. Findings do not support predictive or causal effects between AN and smoking behaviour. Previously reported associations may have been vulnerable to confounding, highlighting the possibility of smoking and AN sharing causal risk factors.

Body composition assessment in adult females with anorexia nervosa and bulimia nervosa - a cross-sectional study comparing dual-energy X-ray absorptiometry scan and isotopic dilution of deuterium

BACKGROUND

Eating disorders (EDs) compromise individuals' nutritional status, affecting among other organs and systems, bone health.

OBJECTIVE

This study aimed to assess and compare bone mineral density (BMD) from dual-energy x-ray absorptiometry (DXA) scan and deuterium (D₂O) dilution of adult females with anorexia nervosa (AN) and bulimia nervosa (BN).

METHODS

This was a cross-sectional study with 53 female participants (18-49 years) with a diagnosis of AN (N = 25) or BN (N = 28). DXA scan was performed to assess BMD, fat mass, and fat-free mass, and D₂O dilution was used to assess total body water (TBW), fat mass, and fat-free mass. Interviews/questionnaires were used to assess symptoms, illness trajectory, and physical activity. T-test, Chi-squared test, Pearson's linear correlation, linear regressions, and Bland-Altman analyses were performed, with a significance level of 5%.

RESULTS

TBW below the recommended level for adult females (≥ 45%) was more frequent in BN (60%) compared with AN (21%; P = 0.013). FMI (soft tissue only) (t-test P = 0.06), and FFMI (t-test P = 0.08) agreed between DXA scan and D₂O dilution. Only FFMI did not show systematic bias of proportion (β:-0.2, P = 0.177). The diagnosis of BN, binge-eating episodes, and physical activity in AN were associated with the differences in the methods' results. FMI was positively associated with BMD in AN, and both FMI and FFMI were positively associated with BMD in BN.

CONCLUSION

In adult females with EDs, DXA scan and D₂O dilution achieved agreement for FMI and FFMI. Changes in fat mass and fat-free mass are important in understanding the mechanisms behind bone loss in EDs. Protocols for body composition assessment in EDs can help to minimize the effect of the ED diagnosis, ED behaviors (i.e., excessive exercise and purging behaviors) and weight on the accuracy of measurements.

Eating disorders and substance use: Examining associations among US college students

OBJECTIVE

To investigate associations between reported eating disorder (ED) diagnosis and substance use disorder (SUD) diagnosis, substance misuse, and illicit drug use among US college students.

METHOD

Data consisting of n = 414,299 students' responses to the National College Health Assessment survey conducted by the American College Health Association between fall 2015 and spring 2019 were utilized for this study. Unadjusted and adjusted odds ratios were used to determine the association of reported ED diagnosis with reported SUD diagnosis, misuse of cigarettes, e-cigarettes, alcohol, marijuana, cocaine/methamphetamine, sedatives, hallucinogens, opiates, inhalants, MDMA, and other club drugs, as well as illicit use of prescription pain killers, prescription sedatives, and prescription stimulants. A sensitivity analysis investigating associations between reported anorexia nervosa (AN), bulimia nervosa (BN), and each substance use outcome was also conducted.

RESULTS

Among all in our analytic cohort, 7.15% reported receiving an ED diagnosis or being treated for an ED in the last 12 months. Students with ED indications were significantly more likely to report each of the substance use outcomes investigated in this study, including SUD diagnosis (aOR: 7.43; 95% CI: 6.98, 7.92; p < .0001), opiate misuse (aOR: 8.35; 95% CI: 7.38, 9.45; p < .0001), and misuse of other club drugs (aOR: 10.37; 95% CI: 9.10, 11.81; p < .0001) than peers without reported EDs. Both AN and BN were associated with an increased likelihood of SUD diagnosis.

DISCUSSION

These findings demonstrate strong associations between EDs and the most extensive list of substance use outcomes explored in the context of college setting ED research to date.

Risk factors for eating disorders among Chinese and international university students: a comparative cross-sectional study

OBJECTIVE

The aim of the study was to investigate the prevalence of eating disorders (EDs) and their association with socio-demographic and behavioural factors among university students.

METHODS

A cross-sectional study among university students (Chinese and international) in Nanjing, China. We collected the data from 877 students, of which 811 were eligible for this study. They submitted a self-administered questionnaire (Eating Disorder Examination Questionnaire 6 (EDE-Q6) related to socio-demographic, health variables and lifestyle factors. Data were assessed with the help of SPSS software.

RESULTS

A total of 401 Chinese and 410 international university students (49.44% vs. 50.55%) participated in this study. Binary logistic regression showed that young female adults of 18~25 years of age had more risk of developing eating disorders. Higher body mass index (BMI), such as overweight and obesity, were more influential risk factors (p < 0.001) for eating disorders. The significant risks (p < 0.001) EDs were found in students who were athletes, physically active, and involved in various extra-curricular activities. Alcohol and smoking were significant risk factors associated with eating disorders.

CONCLUSION

The results indicated higher risks of eating disorders followed by objective binge eating and compensatory behaviour. In this scenario, early assessment and treatment are necessary to reduce the burden of eating disorders and to promote good nutritional practices among university students.

A century of research on psychedelics: A scientometric analysis on trends and knowledge maps of hallucinogens, entactogens, entheogens and dissociative drugs

A scientometric analysis was realized to outline clinical research on psychedelics over the last century. Web of Science Core Collection was searched up to March 18, 2022, for publications on psychedelics. Network analyses and bibliometrics were combined, to identify research themes and trends with Bibliometrix and CiteSpace. The primary aim was to measure research trends evolution over time, and the secondary aims were to identify bibliometric performance and influence networks of publications, authors, institutions, and countries. Sensitivity analyses were conducted for 2016-2022, and 2021 time periods. We included 31,687 documents (591,329 references), which aggregated into a well-structured network with credible clustering. Research productivity was split into an early less productive period mainly focusing on safety issues, and a "psychedelic renaissance" after the 1990s. Major trends were identified for hallucinogens/entheogens, entactogens, novel psychoactive substances (NPS), and on dissociative substances. There was a translational evolution from the bench to the bedside, with phase 2 and 3 trials and/or evidence synthesis in particular. The most recent trends concerned NPS, ketamine-associated brain changes, and ayahuasca-assisted psychotherapy. The USA and Canada were the most productive settings for the research overall, and more recently this geographical distribution became more prominent, reflecting legislative context/policy making. A translational evolution of psychedelics has been occurring, that has brought approval of esketamine for depression and will likely lead to approval of additional psychedelics across mental and physical conditions. Toxicology screening tools for NPS are urgently needed, which in turn might follow the same translational evolution of psychedelics in the future.

Associations between eating disorder symptoms and smoking and vaping use and motives in college students

A positive association between eating disorder (ED) symptoms and cigarette use exists. However, little is known about the association between ED symptoms and e-cigarette use, as well as how these symptoms are related to motives for using cigarettes and e-cigarettes. In this study, 716 college students (M age = 19.23, SD = 1.65; 61 % female) completed an online survey that included the Eating Pathology Symptoms Inventory, smoking and vaping questionnaires, and the Drinking Motives Questionnaire-Revised, which was modified for smoking and vaping. We examined mean differences in ED symptoms in lifetime (and past-month) cigarette and e-cigarette users versus non-users, and investigated correlations between ED symptoms and smoking and vaping motives. Finally, we evaluated whether biological sex influenced the results. Overall, 30.4 % of students reported lifetime smoking, 10.5 % reported past-month smoking, 23 % reported lifetime vaping, and 9.5 % reported past-month vaping. With the exception of higher mean scores for negative attitudes toward obesity in students reporting lifetime smoking versus never smoking after adjusting for sex (M = 5.97 vs. M = 4.52, t[713] = -3.76, q = 0.004), no significant mean differences emerged between those who used nicotine and those who did not, which reflected small to moderate effect sizes. Few associations were observed between ED symptoms and nicotine use motives. These findings suggest that the comorbidity between ED symptoms and smoking and vaping in a non-clinical sample is minimal, although additional research with larger sample sizes of males and females is needed.

Pilot randomized trial of cognitive-behavioral treatment plus contingency management for quitting smoking and weight gain prevention among smokers with overweight or obesity

BACKGROUND

Post-cessation weight gain is a risk factor for relapse among quitters. The primary study aim was to evaluate, among smokers with overweight or obesity, the feasibility and acceptability of a cognitive-behavioral treatment (CBT) plus contingency management (CM) for quitting smoking and weight control. The secondary aim was to examine preliminary tobacco abstinence and weight change outcomes.

METHODS

In an 8-week pilot randomized clinical trial, 41 participants (M_age = 52.73, SD = 10.91, 56.1% females) with overweight or obesity (M_BMI = 31.86, SD = 4.7) received a CBT for both quitting smoking and weight gain prevention (n = 24) or the same treatment plus CM (n = 17), consisting of providing incentives contingent upon smoking abstinence biochemically verified.

RESULTS

Recruitment success rate was 80.39% (41/51), completion rate was 90.24% (37/41), and mean number of sessions attended (out of 15 possible) was 13.20 (SD = 3.1). Mean satisfaction rating for the treatment (1-10 likert-type scale with 10 being most satisfactory) was 9.73 (SD =.61). Preliminary efficacy data indicated that the CM group achieved higher abstinence rates compared with the CBT condition (100% vs. 58.33%, p = .007). Abstinent participants increased 1.25 kg (SD = 1.79) their baseline body weight at the end of treatment (p = .001).

CONCLUSIONS

Providing weight gain prevention strategies and CM within a smoking cessation treatment seems feasible and acceptable. Preliminary data indicated that including CM facilitates tobacco abstinence rates, nevertheless no advantage for CM was found for weight control.

Immunoinflammatory processes: Overlapping mechanisms between obesity and eating disorders?

Obesity and eating disorders are conditions that involve eating behaviors and are sometimes comorbid. Current evidence supports alterations in immunoinflammatory processes in both obesity and eating disorders. A plausible hypothesis is that immunoinflammatory processes may be involved in the pathophysiology of obesity and eating disorders. The aim of this review is to highlight the link between obesity and eating disorders, with a particular focus on immunoinflammatory processes. First, the relation between obesity and eating disorders will be presented, followed by a brief review of the literature on their association with immunoinflammatory processes. Second, developmental factors will be discussed to clarify the link between obesity, eating disorders, and immunoinflammatory processes. Genetic and epigenetic risk factors as well as the potential roles of stress pathways and early life development will be presented. Finally, implications of these findings for future research are discussed. This review highlighted biological and developmental aspects that overlap between obesity and EDs, emphasizing the need for biopsychosocial research approaches to advance current knowledge and practice in these fields.

Weight gain attempts and substance use behaviors among adults across five countries

Weight gain attempts are common among adolescents, yet a paucity of research has explored these behaviors among adults, particularly in relation to substance use behaviors. To address this gap in the literature, pooled data from the 2018 and 2019 International Food Policy Study (N = 42,108) were analyzed. The association of weight gain attempts in the past 12 months with four important and relatively common substance use behaviors (alcohol use, binge-drinking, cigarette smoking, marijuana use) was examined using multiple modified Poisson regression analyses that adjusted for theoretically relevant covariates. Among men and women, weight gain attempts were associated with a higher likelihood of cigarette smoking in the past 30 days, marijuana use in the past 12 months, and binge-drinking one or more times per month in the past 12 months among men only. Among women, weight gain attempts were associated with a lower likelihood of alcohol use one or more times per month in the past 12 months. Our findings contribute to the literature demonstrating that substance use behaviors are more prevalent among adults who report weight gain attempts in a large international sample.

Potential Triggers for Risking the Development of Eating Disorders in Non-Clinical Higher-Education Students in Emerging Adulthood

Nowadays, eating disorders (ED) among individuals during emerging adulthood have become a crucial challenge to public health, taking into account the fact that the global prevalence of the ED risk in student-aged populations already stands at 10.4% and has been sharply increasing during the COVID-19 pandemic. In all, from 50% to 80% of all the ED cases go undetected or are not correctly diagnosed; moreover, these individuals do not receive specialized treatment. Therefore, early diagnosis detected via screening questionnaires for ED is highly recommended. This study aimed to identify the triggers for ED risk development in emerging-adulthood individuals and to reveal the factors significant not only for ED prevention but also for assessing individuals with subthreshold symptoms. This cross-sectional study provides the results for the ED symptom screening in 1716 Lithuanian higher-education students aged 21.2 ± 3.9, during emerging adulthood. According to the results of this study, 19.2% of students were at risk for ED. Potential risk factors such as sex (odds ratio (OR): 3.1, 95% CI: 1.9-4.9), body weight (self-reported body mass index) (adjusted (A) OR: 1.4; 95% CI: 1.2-1.7) and comorbidities such as smoking (AOR: 2.1; 95% CI: 1.6-2.8), and perceived stress during the pandemic (AOR: 1.4; 95% CI: 1.1-1.8) are involved in anticipating the symptomatology of ED during emerging adulthood. Regular initial screenings with universally adopted questionnaires and further referral to a psychiatrist must be applied to promote both the diagnosis of early-onset symptomatology and the treatment of these ED in student-aged populations. Preventive programs for reducing the prevalence of overweight or obesity among students during emerging adulthood should focus on integration directions for the development of a positive body image.

Compulsive exercise and vaping among a sample of U.S. College students aged 18-26 years

PURPOSE

To determine the association between compulsive exercise and vaping among college students aged 18-26 years, and to characterize the type of vaping used among participants who report compulsive exercise.

METHODS

Cross-sectional, pooled data from two survey years (2018-2020; N = 2125) of the national (U.S.) Healthy Minds Study were analyzed. Compulsive exercise was measured based on number of occurrences in the past 28 days (analyzed continuously and among those who reported  ≥ 1 and ≥ 20 occurrences). Vaping was measured based on reported use in the past 30 days. Most recent type of vaping was assessed only among participants who reported vaping. Logistic regression analyses were conducted to estimate the associations between compulsive exercise and vaping, while adjusting for covariates.

RESULTS

For every additional occurrence of compulsive exercise reported by participants, their odds of also reporting vaping increased by 5% (95% CI 1.01-1.09). Participants who reported 20 or more occurrences of compulsive exercise in the past 28 days, a clinical threshold, had 3.71 (95% CI 1.28-10.76) higher odds of vaping in the past 30 days. Among participants who endorsed vaping, nicotine vaping was the most common recent type for those who reported any (76.2%) or 20 or more (50.2%) occurrences of compulsive exercise.

CONCLUSION

Compulsive exercise is associated with vaping in a national, U.S. sample of college students, with nicotine vaping being the most common type used. Screening for both compulsive exercise and vaping, particularly if either is reported, among college-age young adults is necessary to implement prevention and intervention strategies.

LEVEL OF EVIDENCE

V, cross-sectional descriptive study.

Tobacco product use for weight control as an eating disorder behavior: Recommendations for future clinical and public health research

Tobacco product use (TPU; e.g., smoking, e-cigarettes, other emerging products) is elevated in eating disorders (EDs), yet the phenomenology of tobacco use within EDs has not received much attention. Due to the appetite suppressant effects of tobacco products as well as the array of availability of tobacco products in hedonic flavors (e.g., gummy bear, fruit), TPU may be used for weight control, such as to suppress appetite, satisfy cravings, or for meal replacement. The purpose of this article was to outline theoretical research on TPU for weight control as a mechanism in EDs as well as key areas for future research. We discuss the conceptualization and nature of TPU for weight control and how it may be related to EDs and associated behaviors, TPU patterns and smoking for weight control in EDs, and the effectiveness of current interventions and development of novel intervention protocols for individuals with EDs who use tobacco. Overall, this article outlines novel research questions on TPU in EDs and as a weight control behavior and provides recommendations to clarify the conceptualization and role of TPU within EDs.

Orthorexia nervosa and substance use for the purposes of weight control, conformity, and emotional coping

PURPOSE

Orthorexia nervosa (ON), characterized by extreme behaviors driven by the goal of eating only healthy and pure foods, could plausibly be associated with avoidance of nicotine, alcohol, and illicit drugs. However, findings from the limited research on these relationships are mixed, and other eating disorders are associated with greater substance abuse.

METHOD

An online survey was completed by 471 participants (86% women, mean age = 20) recruited from undergraduate courses and through an Instagram advertisement. The questionnaires assessed ON symptomatology; frequency of smoking, alcohol consumption, and illicit drug use; abuse of these substances; and motivations for using these substances.

RESULTS

ON scores were not significantly related to the level of use or abuse of nicotine, alcohol, or most illicit drugs. Yet, ON scores were positively correlated with frequency of using illicit depressant drugs. Further, among substance users, ON scores were positively associated with smoking or vaping for the purpose of weight control, and with consuming alcohol and using illicit drugs for the purposes of conformity and coping with such negative emotions as anxiety and depression.

CONCLUSION

Although people who are high in ON symptomatology may be at least partly driven by a strong desire to be as healthy as possible, they are not less likely to use potentially harmful drugs. Instead, many of them may even turn to certain drugs for the same weight control and emotional-coping motives that guide the behaviors of individuals with other eating disorders.

LEVEL OF EVIDENCE

Level V, descriptive cross-sectional study.

Effects of night eating and binge eating disorders on general health in university students in Lebanon

BACKGROUND

Eating disorders (EDs) have an important impact on both physical and mental wellbeing, especially in a young population. There is a lack in research about EDs in the Middle East, and especially in Lebanon, where the co-occurring obesity is a widespread health problem.

AIM

Our study aims to assess the relation between night eating syndrome (NES) with binge eating disease (BED) and obesity (BMI) on one hand, and between NES and general health on the other hand, in university students.

MATERIALS AND METHODS

An observational cross-sectional study was conducted on 460 university students in Lebanon. Data collection was carried out using an online questionnaire. Socio-demographic and general health characteristics, BMI, Arabic validated General Health Questionnaire (GHQ-12), Arabic validated Binge Eating Scale (BES) and the Night Eating Diagnostic Questionnaire (NEDQ). Statistical analysis was accomplished on SPSS.

RESULTS

Participants having highest income showed highest NEDQ score. Females and participants with a history of eating disorders were more likely to have BED. A significant correlation was also found between having an ED history and negative impact on general health. BMI was correlated with both NEDQ and BES. Having NES was associated with also having BED. Furthermore, those with NES showed higher scores regarding GHQ-12.

CONCLUSION

Relatively high prevalence of NES and BED was noted in university students in Lebanon. This was correlated to a household income, general health, and BMI. The repercussion on both physical and mental morbidities highlights the importance for stepping up of the Lebanese organizational system to perform periodic screening.

Prevalence of Binge-Eating Disorder and Its Association with Nicotine Dependence Among Under-Graduate Students at a Saudi Public University

Purpose

There is minimal information regarding the prevalence of binge-eating disorders in Saudi Arabia. This study aims to measure the prevalence of BED and its association with nicotine dependency (ND) among undergraduate university students at Imam Mohammad Ibn Saud Islamic University (IMSIU).

Methods

A cross-sectional study recruited 878 participants, with an inclusion criteria that encompassed all IMSIU undergraduate students of either sex. The online-based self-report questionnaire was distributed through e-mail, which used the Binge-Eating Disorder Screener-7 (BEDS-7) to evaluate BED symptoms and the Fagerstrom Test of Nicotine Dependence (FTND) to measure the levels of ND. The e-FTND version was also adapted into the questionnaire to account for modern methods of nicotine usage.

Results

A total of 165 participants were BED positive, with a prevalence of 18.8%, 99 of whom were women, and 66 were men. Women were significantly more predicted for BED than men (p = 0.035). Men appeared to be mainly more expected to be nicotine dependent (p < 0.001). BED positive participants showed a higher probability of being nicotine dependent than BED negative participants in the multivariate logistic regression analysis (95% CI 1.3–3.2; p = 0.002).

Conclusion

BED prevalence was notably high compared to worldwide estimates, with a significant association to nicotine dependence by the multivariate analysis. In the future, more investigations regarding the prevalence of specific types of eating disorders, including BED, in Saudi Arabia need to be considered.

Reproductive health outcomes among eating disordered females: a register-based follow-up study among former adolescent psychiatric inpatients

OBJECTIVE

To analyze an association of eating disorders (EDs) to reproductive health outcomes among former adolescent psychiatric inpatients, hospitalized between the ages 13 and 17 years. The register-based follow-up information on psychiatric comorbidity and use of prescribed addictive psychotropic medication up to early adulthood were also explored.

METHODS

A total of 31 (10.3%) women with a diagnosed ED were identified from the initial sample of 300 female adolescents, treated in psychiatric inpatient care between 2001 and 2006. The K-SADS-PL and EuropASI research instruments were used to gather information during the adolescent psychiatric hospitalization. The follow-up data for reproductive health outcomes and psychiatric comorbidity up to early adulthood were obtained from the national health care registers. Information on prescribed addictive psychotropic medication was provided by the Social Insurance Institution of Finland. In analyses, EDs were categorized into anorexia nervosa (AN) and other EDs (OED). AN accounted for 58.1% of all EDs. Of OEDs, the majority (69.1%) were bulimia.

RESULTS

None of the women with AN, but 53.8% of those with OED had undergone medical abortions by early adulthood. Childbirths were emphasized in women with OED (61.5%) and a history of hospital-treated poisonings in women with AN (55.6%). High nicotine dependence in adolescence (30.8%) was a characteristic of women with OED.

CONCLUSION

Our study findings suggest that OED may expose affected women to various unfavorable reproductive health outcomes, particularly women with a history of psychiatric admissions. Recognizing the differences in young women with different subtypes of ED is important when discussing contraception and pregnancy.

Associations between vaping and eating disorder diagnosis and risk among college students

Vaping is common among college-age young adults. Preliminary research has shown associations between vaping and eating disorder symptoms, however, there remain gaps in this knowledge among college students. The aim of this study was to determine the associations between vaping and a self-reported lifetime eating disorder diagnosis and eating disorder risk among a large sample of college students. Cross-sectional data from the 2018-2019 national (U.S.) Healthy Minds Study (n = 51,231) were analyzed. Multiple logistic regression analyses were conducted to determine the unadjusted and adjusted associations between vaping or e-cigarette use in the past 30 days and a self-reported lifetime eating disorder diagnosis (any diagnosis, anorexia nervosa, bulimia nervosa, binge-eating disorder) and eating disorder risk (SCOFF). Among the sample, 19.0% of participants reported vaping or e-cigarette use in the past 30 days, 3.7% self-reported any lifetime eating disorder diagnosis, and 25.0% were at elevated risk for an eating disorder. Vaping or e-cigarette use was associated with higher odds of all eating disorder measures, including the self-reported lifetime eating disorder diagnosis items (any diagnosis, anorexia nervosa, bulimia nervosa, binge-eating disorder) and elevated eating disorder risk, while adjusting for demographic and confounding variables. Among a large sample of college students, vaping or e-cigarette use was associated with a self-reported lifetime eating disorder diagnosis and elevated eating disorder risk, which may exacerbate the many medical complications associated with eating disorder behaviors. Clinical professionals should screen for eating disorder behaviors among college students who report vaping or e-cigarette use to monitor symptoms and medical complications.

Investigating genetic correlation and causality between nicotine dependence and ADHD in a broader psychiatric context

People with attention-deficit/hyperactivity disorder (ADHD) or other psychiatric disorders show high rates of nicotine dependence (ND). This comorbidity might be (partly) explained by shared genetic factors. Genetic correlations between ND and ADHD (or other psychiatric disorders) have not yet been estimated. A significant genetic correlation might indicate genetic overlap, but could also reflect a causal relationship. In the present study we investigated the genetic correlation (with LD score regression analyses) between ND and ADHD, as well as between ND and other major psychiatric conditions (major depressive disorder, schizophrenia, anxiety, bipolar disorder, autism spectrum, anorexia nervosa, and antisocial behavior) based on the summary statistics of large Genome Wide Association studies. We explored the causal nature of the relationship between ND and ADHD using two-sample Mendelian randomization. We found a high genetic correlation between ND and ADHD (r_g  = .53, p = 1.85 × 10^-13 ), and to a lesser extent also between ND-major depressive disorder (r_g  = .42, p = 3.6 × 10^-11 ) and ND-schizophrenia (r_g  = .18, p = 1.1 × 10^-3 ). We did not find evidence for a causal relationship from liability for ADHD to ND (which could be due to a lack of power). The strong genetic correlations might reflect different phenotypic manifestations of (partly) shared underlying genetic vulnerabilities. Combined with the lack of evidence for a causal relationship from liability for ADHD to ND, these findings stress the importance to further investigate the underlying genetic vulnerability explaining co-morbidity in psychiatric disorders.

Delineating the role of binge eating in cancer research

PURPOSE

Binge eating is defined as consumption of a large amount of food accompanied by a sense of loss of control over eating. While binge eating is associated with poor physical, behavioral, and psychosocial health, it has not been studied in cancer research. Therefore, the overarching goal of this review is to delineate the role of binge eating in cancer research and to spur new research in this area. Specifically, in this review, we outlined (1) binge eating as a possible risk factor that contributes to cancer risk, (2) how binge eating may develop after cancer diagnosis, and (3) how binge eating may be associated with health and relapse during survivorship.

CONCLUSIONS

It is critical to elucidate the role of binge eating in the prevention of cancer and long-term cancer survivorship. This review suggested a number of ways that binge eating may increase risk for cancer as well as several pathways that may lead to the development of binge eating after cancer diagnosis.

LEVEL OF EVIDENCE

Level V: narrative review.

Anorexia nervosa and the gastrointestinal tract

Anorexia nervosa (AN) is a complex eating disorder associated with a high morbidity and mortality, however, there is a lack of dedicated training for healthcare professionals outside of mental health specialities. There has been a reported increase in acute admissions of patients with AN, which may have been precipitated by the isolation and loss of support networks created by the COVID-19 pandemic. The purpose of this review is to highlight that AN can present with a wide variety of signs and symptoms relating to both the hollow and solid organs of the gastrointestinal (GI) tract some of which may even be life threatening. The overlap of symptoms with several other functional and organic GI diseases makes diagnosis challenging. Gastroenterologists and allied healthcare professionals need to be aware of the wide array of possible GI manifestations not only to help rationalise investigations but to also facilitate early involvement of the relevant multidisciplinary teams. Many of the GI manifestations of AN can be reversed with careful nutritional therapy under the guidance of nutrition support teams.

The relation of orthorexia with lifestyle habits: Arabic versions of the Eating Habits Questionnaire and the Dusseldorf Orthorexia Scale

BACKGROUND

Some of the commonly used tools to assess orthorexia nervosa (OrNe) do not allow a meaningful interpretation of the scores or yield mixed results about the dimensions needed to represent orthorexia. Since no advancement in the theoretical knowledge can be made without a thorough examination of the measurement aspects, this study aimed to evaluate the correlation between orthorexia nervosa (OrNe) and lifestyle habits, notably alcohol drinking, cigarette and waterpipe smoking, and physical exercise, and to validate and assess the psychometric properties of the Arabic versions of the Eating Habits Questionnaire (EHQ) and Düsseldorf Orthorexia Scale (DOS).

METHODS

A total of 456 adult participants completed a self-administered questionnaire. Exploratory structural equation models were used to test the internal structure of the instruments. Shorter and more explicit versions were proposed for instruments. Pearson and partial correlations were computed between orthorexia scores and healthy behaviors scores.

RESULTS

Regarding the internal structure of both EHQ and DOS, evidence favored the bi-dimensional construct of orthorexia. Both tools presented two theoretically clearly interpretable factors (OrNe and Healthy Orthorexia-HeOr-). The two questionnaires presented a high convergent validity, as dimensions with the same interpretation were correlated around 0.80. While OrNe was positively correlated with the use of unhealthy substances (higher alcohol use disorder, cigarette, and waterpipe dependence), HeOr was negatively associated with these behaviors.

CONCLUSION

Our results emphasize the idea that further attention should be paid to the multidimensional structure of orthorexia, as OrNe and HeOr present an opposite pattern of associations with healthy behaviors. An OrNe etiopathogenesis common to eating disorders can explain these differences.

Prevalence and demographic, substance use, and mental health correlates of fasting among U.S. college students

BACKGROUND

Fasting is an unhealthy behavior that has been frequently used as part of weight loss attempts. To date, little research has been conducted to determine the prevalence and substance use and mental health correlates of fasting among college students. Therefore, the aim of this study was to estimate the prevalence and associations between any (≥ 1 time) and regular (≥ 13 times) occurrences of fasting in the past 4 weeks and substance use and mental health correlates among a large sample of college students from 2016 to 2020.

METHODS

Data from four academic survey years (2016-2020; N = 8255) of the national (USA) Healthy Minds Study were analyzed. Unadjusted prevalence of any and regular fasting by survey year and gender was estimated. Multiple logistic regression analyses were conducted to estimate the associations between any and regular fasting and the demographic (age, body mass index, race/ethnicity, sexual orientation, highest parental education), substance use (cigarette use, marijuana use, other illicit drug use, alcohol use), and mental health (depression, anxiety, eating disorder symptoms, suicidal ideation, non-suicidal self-injury) correlates.

RESULTS

Any fasting in the past 4 weeks was common among both men (14.77%) and women (18.12%) and significantly increased from 2016 (10.30%) to 2020 (19.81%) only among men. Regular fasting significantly increased among both men and women from 2016 (men: 1.46%; women: 1.79%) to 2020 (men: 3.53%; women: 6.19%). Among men and women, both any and regular fasting in the past 4 weeks were associated with higher odds of all mental health symptoms, including a positive depression, anxiety, and eating disorder screen, suicidal ideation, and non-suicidal self-injury. Among women, but not men, any and regular fasting in the past 4 weeks were associated with higher odds of marijuana use and other illicit drug use (e.g., cocaine, ecstasy).

CONCLUSIONS

The results from this study underscore both the high and increasing prevalence of fasting among a national sample of college students, as well as the substance use and mental health symptoms associated with this behavior. Healthcare professionals both on and off campus should consider screening for fasting behaviors among college students and provide appropriate intervention when needed.

Prevalence and determinants of tobacco use amongst South African adults with mental illness in the Eastern Cape

Background

Given the physical and mental health consequences of tobacco use amongst individuals with mental illness, it was imperative to assess the burden of tobacco use in this population.

Aim

This study examined the patterns and factors associated with tobacco use in individuals attending the outpatient unit.

Setting

Cecilia Makiwane Hospital Mental Health Department in Eastern Cape province, South Africa.

Methods

Lifetime (ever use) use and current use of any tobacco products were examined in a cross-sectional study of 390 individuals between March and June 2020. A logistic regression was fitted to determine the correlates of lifetime and current use of any tobacco products.

Results

The rates of ever use and current use of tobacco products were 59.4% and 44.6%, respectively. Of the participants interviewed, lifetime tobacco use was more prevalent amongst individuals with schizophrenia (67.9%) and cannabis-induced disorders (97.3%) and lower in those with major depressive disorders (36.1%) and bipolar and related disorders (43.5%). Men were six times more likely to have ever used or currently use tobacco products in comparison to women. Also, those who had a salaried job or owned a business were over three times more likely to have ever used or currently use tobacco products compared with those receiving government social grants.

Conclusions

The prevalence of tobacco use in this study was significantly higher than the general population in the Eastern Cape. Therefore, smoking prevention and cessation interventions targeted at the general population should target this often neglected sub-population in the region.

Eating disorders and the risk of developing cancer: a systematic review

PURPOSE

Evidence concerning eating disorders as risk toward developing cancer is sparse. Energy restriction might be cancer protective, while malnutrition, vomiting, laxative and substance use might stimulate cancer development. We examined whether individuals with an eating disorder (not restricted to anorexia nervosa) had a different risk of developing cancer.

METHODS

A systematic search on Medline and Embase until 28th April 2020 identified relevant human original research publications, including all populations and all cancer types.

RESULTS

From 990 records, 6 case reports and 9 cohorts were included. Some cohorts found a decreased breast (3/5 studies) or cervical (1/2) cancer risk, while an increased esophageal (2/3), liver (1/1), brain (1/1 in men) and respiratory (2/4) cancer risk, but other cancer risks were non-significant, and an increased mortality overall (1/2), from breast (1/1), female genital (1/1) and skin (1/1) cancer in eating disorder patients. The case reports further described esophageal cancer and leukemia. No clear statistical differences in cancer risk were found depending on eating disorder type, perhaps due to the small sample size (n = 1783 for other than anorexia nervosa).

CONCLUSIONS

The literature on eating disorders and cancer risk is sparse with many gaps. Hormonal changes, sexual activity, nutritional status, vomiting and concomitant tobacco/alcohol abuse may explain increased/decreased cancer risk. Future large studies (now 1-366 cancer cases) that also include men (now 4.7%), bulimia nervosa (now 3.8%) and several cancer sites (now mainly breast cancer) are needed and should foresee longer follow-up time (now 5.4-15.2 years) and extensive confounder adjustment (now only age and sex).

LEVEL OF EVIDENCE

Level I, systematic review.

Online Test of Risk Self-Detection of Eating Disorders

This study's central aim was to examine the effectiveness of an online test of the Risk Self-Detection of Eating Disorders through the evaluation of (1) its psychometric properties, the significant probability of predicting risk eating behavior and the correct classification of membership to the risk or non-risk group and (2) the ability to measure users' risk self-awareness through a group of statements and explore the expected responses through frequency analysis of the content provided by the users. The non-probability sample was comprised of n = 541 women aged 15 to 25 (M = 18.3; SD = 2.4). The instrument showed good psychometric properties, a structure of three predictive risk factors, and proper effect sizes (R² = 0.67-0.69). Among the most critical findings were high percentages of correct classification (94-97%) and expected responses (61%). The logistic regression analysis showed that the risk of presenting eating disorders was higher if the participants smoked, consumed alcohol, had sexual experiences before the age of 15, and if those sexual experiences were non-consensual. Evidence is presented about the promising results of the online data collection method and its potential benefits.

The prevalence, odds and predictors of lifespan comorbid eating disorder among people with a primary diagnosis of bipolar disorders, and vice-versa: Systematic review and meta-analysis

BACKGROUND

There are scarce and discrepant data about the prevalence and correlates of co-occurring eating disorders (EDs) among people with a primary diagnosis of bipolar disorder (BD), and vice-versa, compelling a systematic review and meta-analysis on the matter.

METHODS

MEDLINE/PsycINFO databases were systematically searched for original studies documenting BD⇌ED comorbidity across the lifespan, from inception up until April 20^th, 2020. Random-effects meta-analysis and meta-regression analyses were conducted, accounting for multiple moderators.

RESULTS

Thirty-six studies involved 15,084 primary BD patients. Eleven studies encompassed 15,146 people with primary EDs. Binge eating disorder (BED) occurred in 12.5% (95%C.I.=9.4-16.6%, I²=93.48%) of BDs, while 9.1% (95%C.I.=3.3-22.6%) of BEDs endorsed BD. Bulimia Nervosa (BN) occurred in 7.4% (95%C.I.=6-10%) of people with BD, whereas 6.7% (95%C.I.=12-29.2%) of subjects with BN had a diagnosis of BD. Anorexia Nervosa (AN) occurred in 3.8% (95%C.I.=2-6%) of people with BDs; 2% (95%C.I.=1-2%) of BD patients had a diagnosis of AN. Overall, BD patients with EDs had higher odds of being female vs. non-ED controls. Several moderators yielded statistically significant differences both within- and between different types of BDs and EDs.

LIMITATIONS

Scant longitudinal studies, especially across different EDs and pediatric samples. High heterogeneity despite subgroup comparisons. Limited discrimination of the quality of the evidence.

CONCLUSIONS

The rates of BD⇌ED comorbidity vary across different diagnostic groups, more than they do according to the "direction" of BD⇌ED. Further primary studies should focus on the risks, chronology, clinical impact, and management of the onset of intertwined BD⇌ED across different ages, promoting a continuum approach.

Unhealthy life habits associated with self-induced vomiting and laxative misuse in Brazilian adolescents

Adolescence is a stage in life characterized by important social, cognitive, and physical changes. Adolescents are vulnerable to various psychosocial disorders, including eating disorders. We aimed to investigate the association between unhealthy habits, sociodemographic characteristics, and the practice of self-induced vomiting or laxative misuse in a representative sample of Brazilian adolescent girls and boys. Data from 102,072 students who participated in the National Adolescent School-based Health Survey were analyzed using the dependent variable: presence or absence of self-induced vomiting and/or laxative misuse; independent variables: consumption of unhealthy and high-calorie food items, age during first sexual intercourse, and the use of tobacco, alcohol, and/or illicit drugs. Associations between exposure and outcome were estimated using Poisson's regression models stratified by sex, and including region, school, age group, and mother's educational history as adjustment variables. Eating ultra-processed foods and age during first sexual intercourse were associated with self-induced vomiting and laxative misuse only for girls; all other variables (consuming unhealthy foods and using legal or illicit substances) were associated with these behaviors for both sexes after applying adjustment variables. Early interventions focusing on changing unhealthy behaviors may prevent development of eating disorders in adolescents. Our findings demonstrate a strong association of many unhealthy habits with laxative misuse and self-induced vomiting practices in Brazilian adolescents.

Eating patterns and unhealthy weight control behaviors are associated with loss-of-control eating following bariatric surgery

BACKGROUND

Loss-of-control (LOC) eating is associated with poor weight-loss outcomes following bariatric surgery. It is not clear whether eating patterns (e.g., total number of daily meals/snacks, eating after suppertime, eating when not hungry) and unhealthy weight control behaviors (e.g., smoking, using laxatives) are associated with or predictive of LOC eating.

OBJECTIVES

To examine whether eating patterns and unhealthy weight-control behaviors are associated with LOC eating and, if so, whether they predict LOC eating in bariatric patients.

SETTING

Multicenter study, United States.

METHODS

This is a secondary analysis of the Longitudinal Assessment of Bariatric Surgery-2 study. Assessments were conducted before surgery and at 12, 24, 36, 48, 60, and 84 months after surgery. Logistic mixed models were used to examine the longitudinal associations between eating patterns, unhealthy weight-control behaviors, and LOC eating. Time-lag techniques were applied to examine whether the associated patterns and behaviors predict LOC eating.

RESULTS

The participants (n = 1477) were mostly women (80%), white (86.9%), and married (62.5%). At the time of surgery, the mean age was 45.4 ± 11.0 years and the mean body mass index was 47.8 ± 7.5 kg/m². The total number of daily meals/snacks, food intake after suppertime, eating when not hungry, eating when feeling full, and use of any unhealthy weight-control behaviors were positively associated with LOC eating (P < .05). Food intake after suppertime, eating when not hungry, and eating when feeling full predicted LOC eating (P < .05).

CONCLUSION

Meal patterns and unhealthy weight control behaviors may be important intervention targets for addressing LOC eating after bariatric surgery.

Eating Disorders and the Use of Cognitive Enhancers and Psychostimulants Among University Students: A Cross-Sectional Study

BACKGROUND

University students, who are at risk of eating disorders (ED), are more liable to use cognitive enhancers and psychostimulants to improve their cognitive functions and lose weight. ED in Palestinian male students is a neglected health issue. We aimed to investigate the prevalence and the association between ED and cognitive enhancers, and psychostimulants use among An-Najah National University students (ANNU).

METHODS

In a cross-sectional study conducted in 2020 at ANNU, 1047 students completed anonymous surveys for cognitive enhancers practice, the Eating Attitude Test-26 (EAT-26), Sick, Control, One, Fat and FOOD (SCOFF) screening tests.

RESULTS

The prevalence of ED among ANNU students was 21.2% based on EAT-26 (17.1% in males, 23.8% in females) and 31.5% based on SCOFF (24.0% in males, 36.3% in females). The binary logistic regression revealed that students at risk to have ED were water-pipe smokers (OR: 1.471, p-value 0.047), especially males, while students who were less likely to have ED were males (OR: 0.341, p-value<0.001), coffee users (OR: 0.581, p-value 0.014) and chocolate users (OR: 0.530, p-value 0.041) than nonusers. Moreover, the risk of ED increased with increasing body mass index (p-value<0.01). Clinical medical students showed the lowest prevalence (11.1%) compared to preclinical (22.5%), health sciences (23.7%), and non-medical students (20.9%) (p-value 0.059).

CONCLUSION

Our findings highlight water-pipe smoking as a significant health problem in males with ED, which may require unique treatment and prevention strategies. Moreover, coffee and chocolate consumption were associated with decreased risk of ED, only among males. The gender-gap in ED prevalence was very narrow compared to international results. These results prompt the need to focus on both genders in future studies instead of females. They also suggest the urgent need to address ED among Palestinian university students by educating students about mental health, identifying high-risk students, and offering easily accessible psychological help.

Prevalence of disordered eating behaviors and associated factors in Brazilian university students

BACKGROUND

University students may be a vulnerable group to adopt unhealthy behaviors, including changes in eating behavior. Assessment of factors associated with the prevalence of disordered eating behaviors in this population may facilitate the early identification of their predictors, thus allowing fast interventions.

AIM

To analyze the prevalence of disordered eating behaviors (DEB) and associated factors in Brazilian university students.

METHODS

Cross-sectional study of male and female students aged 16-25 years, enrolled in full-time degree program at a public university in the mid-west of Brazil. Disordered eating behaviors in the last three months (binge eating, purging, and food restriction), through an adapted version of the instrument developed by Hay, was evaluated and the association with demographic and socioeconomic characteristics, including lifestyle, body image, perceived stress, depressive symptoms, and excess weight, was analyzed. A hierarchical analysis model was performed to determine the relative importance of factors on the prevalence of DEB.

RESULTS

A total of 1608 university students were evaluated (50.7% male). Prevalence of DEB was 4.4% for binge eating, 2.5% for purging and 9.1% for food restriction, all of which were higher among women (7.0%, 4.4%, and 13.5%) compared with men (1.8%, 0,6%, and 4.9%, respectively). The factors that remained significantly associated with these behaviors were female sex, smoking, consumption of alcoholic beverages, dissatisfaction with body image, excess weight, high perceived stress, and presence of self-reported depressive symptoms.

CONCLUSION

Factors associated with DEB signal that intervention is required to create synergy between individual and population-level interventions in lifestyle behaviors.

Smoking and disability pension: a systematic review and meta-analysis

OBJECTIVES

Smoking has negative consequences on occupational health. The current meta-analysis was conducted with the aim to pool the studies about smoking and increased disability pension.

STUDY DESIGN

Systematic review and meta-analysis.

METHODS

Articles were found in the scientific literature using keywords, and searching was limited to prospective cohort studies that had been published before August 2018. Based on the inclusion and exclusion criteria, 23 prospective cohort studies were selected. The analyses were carried out on the basis of the random-effects method. Subgroup analysis was also carried out. Finally, the bias of publication was examined using Begg's test, the Egger test, the trim-and-fill method, and the funnel plot.

RESULTS

Twenty-three studies were included. The results showed a positive association between smoking and disability pension, with a risk ratio (RR) of 1.41 and 95% confidence interval (95% CI) of 1.30-1.53 (P < 0.001). In men, the RR was equal to 1.48 and 95% CI was equal to 1.30-1.68 (P < 0.001). In women, the RR was equal to 1.23 and 95% CI was equal to 1.09-1.37 (P = 0.001). In current smokers, the RR was equal to 1.41 and 95% CI was equal to 1.26-1.57 (P < 0.001). In former smokers, the RR was equal to 1.16 and 95% CI was equal to 1.05-1.29 (P = 0.003). Qualitative evaluation showed that the studies had a low level of selection bias, data collection bias, and withdrawal and dropout bias.

CONCLUSIONS

Smoking is a risk factor for increasing disability pension, and men are at higher risk of disability pension. In addition, both current and former smokers are in high risk of disability pension. Overall, it can be concluded that smoking is a risk factor for occupational health.

Eating Disorder Among Malaysian University Students and Its Associated Factors

Eating disorder is highly prevalent among university students worldwide. However, in Malaysia, studies on eating disorder is scanty and were mostly conducted among medical students. A stratified cluster sampling was used to recruit participants in a university based in Kuala Lumpur. This cross-sectional study was conducted among 1017/1132 students (response rate: 89.8%). The questionnaires administered was a combination of the Eating Attitude Test-26 and items related to perceived body weight, body mass index, trying to weight loss, tobacco use, posttraumatic stress disorder, and depression. Descriptive analyses were performed to provide background information of at-risk students by gender. Multiple logistic regressions were used to identify associated factors of eating disorder. The results showed that 13.9% of the university students were at risk of eating disorder. Students who were trying to lose weight and had posttraumatic stress disorder predicted eating disorder. Hence, eating disorder among university students merits attention and requires implementations of public health policies.