Differential relationships between cannabis consumption and sleep health as a function of HIV status

A Scoping Review of Observational Research on Cannabis Use for Symptom Management in HIV and Cancer: Implications for Cannabis Nursing

BACKGROUND

People with HIV have a higher risk of developing non-AIDS-defining cancers in older age, leading to a significant population living with two conditions, HIV and cancer. There is an increasing interest in cannabis use for symptom management in people with chronic conditions; in 2023, the American Nurses Association officially recognised cannabis nursing as a specialty nursing practice focusing on the care of individuals seeking education/guidance in the therapeutic use of cannabis, supporting the urgency of its research. However, the scientific literature lacks a synthesised review in the focused populations.

AIM

To explore observational research on cannabis use for symptom management among people with HIV and/or cancer and identify gaps in current knowledge to inform future research and policy development.

METHODS

Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR) checklist, a literature search of relevant articles was conducted in the databases PubMed (n = 552), PsycInfo (n = 204), CINAHL (n = 164) and Embase (n = 976). Upon screening 1738 articles, 142 were identified for full-text review and 51 were retained for data extraction.

RESULTS

There were more studies evaluating cannabis use among people with cancer than with HIV and no studies among people living with comorbid HIV and cancer. Most studies were cross-sectional with limited metrics on the perceived effectiveness and safety of cannabis use for symptom management and its dosing/mode of delivery for reducing symptoms. While studies focused on cannabis therapy under the provision of healthcare providers, individuals reported obtaining information about cannabis from friends/family/the Internet.

IMPLICATIONS FOR CANNABIS NURSING

This body of research could be strengthened by rigorous longitudinal study designs to build causal relationships on the therapeutic effects of cannabis use and the inclusion of reliable and valid symptom assessment measures over time, which facilitates developing clinical practice guidance and policymaking in cannabis nursing.

PATIENT OR PUBLIC CONTRIBUTION

No patient or public contribution.

Are Sweet Dreams Made of These? Understanding the Relationship Between Sleep and Cannabis Use

Introduction: There is widespread literature on the interaction between cannabis use and sleep, yet the mechanisms that underlie this relationship are not well understood. Several factors lead to inconsistencies in this relationship suggesting a nuanced interaction between cannabis and sleep. An important question that remains to be addressed is the temporal relationship between disrupted sleep and cannabis use. This literature review summarizes the existing literature on the association between disrupted sleep and cannabis toward the goal of addressing the question of the chronology of these reported effects. Materials and Methods: We conducted a review of the literature using PubMed to summarize current knowledge on the association between cannabis use and sleep in humans. Results: We identified 31 studies on the association of cannabis use and sleep. The findings from these studies were mixed. Cannabis was associated with a variety of impacts on sleep ranging from beneficial effects, such as reduced sleep-onset latency, to negative outcomes, such as reduced sleep duration and suppressed rapid eye movement oscillations. The chronology of the interaction of cannabis and sleep was unclear, although much of the current literature focus on factors that modulate how cannabis impairs sleep after initial use. Conclusion: There was sufficient evidence to suggest that cannabis use alters circadian rhythms, and hence, negatively impacts sleep. The current literature is largely from studies utilizing self-report measures of sleep; thus, objective measures of sleep are needed. In addition, although there were no empirical studies on the temporal relationship between cannabis use and sleep, the majority of the literature focused on characterizing sleep impairment after cannabis use.

Cannabis use is associated with greater total sleep time in middle-aged and older adults with and without HIV: A preliminary report utilizing digital health technologies

Current literature on the effect of cannabis use on sleep quality is mixed, and few studies have used objectively-measured sleep measures or real-time sampling of cannabis use to examine this relationship. The prevalence of cannabis use among older adults and persons living with HIV has increased in recent years, and poor sleep quality is elevated in these populations as well. However, research examining cannabis-sleep relationships in these populations is lacking. Thus, we aimed to examine the relationship between daily cannabis use and subsequent objectively-measured sleep quality in middle-aged and older adults with and without HIV. In this pilot study, seventeen (11 HIV+, 6 HIV-) adults aged 50-70 who consumed cannabis completed four daily smartphone-based surveys for 14 days, in which they reported their cannabis use (yes/no) since the last survey. Participants also wore actigraphy watches during the 14-day period to objectively assess sleep quality (i.e., efficiency, total sleep time, and sleep fragmentation). In linear mixed-effects models, cannabis use was significantly associated with greater subsequent total sleep time (β=0.56; p=0.046). Cannabis use was not related to a change in sleep efficiency (β=1.50; p=0.46) nor sleep fragmentation (β=0.846, p=0.756) on days with cannabis use versus days without cannabis use. These preliminary results indicate cannabis use may have a positive effect on sleep duration in middle-aged and older adults. However, future studies with larger sample sizes that assess cannabis use in more detail (e.g., route of administration, dose, reason for use) are needed to further understand this relationship.