A Longitudinal Analysis of Cannabis Use and Mental Health Symptoms Among Gay, Bisexual, and Other Men Who Have Sex with Men in Vancouver, Canada

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dc.contributor.authorChou, Frank Y.
dc.contributor.authorArmstrong, Heather L.
dc.contributor.authorWang, Lu
dc.contributor.authorBacani, Nicanor
dc.contributor.authorLachowsky, Nathan J.
dc.contributor.authorPatterson, Thomas L.
dc.contributor.authorWalsh, Zach
dc.contributor.authorOlarewaju, Gbolahan
dc.contributor.authorCard, Kiffer G.
dc.contributor.authorRoth, Eric A.
dc.contributor.authorHogg, Robert S.
dc.contributor.authorMoore, David M.
dc.date.accessioned2022-06-16T18:44:43Z
dc.date.available2022-06-16T18:44:43Z
dc.date.copyright2019en_US
dc.date.issued2019
dc.descriptionThe authors would like to thank the Momentum Health Study participants, office staff and community advisory board, as well as our community partner agencies, Health Initiative for Men, YouthCO HIV & Hep C Society, and Positive Living Society of BC.en_US
dc.description.abstractBackground: Cannabis use, anxiety, and depression are common among gay, bisexual, and other men who have sex with men (gbMSM) and some report using cannabis to manage mental health symptoms. Methods: Sexually-active gbMSM aged ≤16 years were recruited into a longitudinal cohort through respondent-driven sampling and completed study visits every six months. Data on demographics, drug use, and anxiety and depression symptoms were collected via a self-administered computer-based survey. A study nurse determined previous mental health diagnoses and treatment. Using multivariable generalized linear mixed models, we examined factors associated with regular cannabis use (≥weekly in the previous 3 months) and, among individuals who reported anxiety or depression/bipolar diagnoses, factors associated with moderate/severe anxiety or depression symptoms. Results: Of 774 participants (551 HIV-negative, 223 HIV-seropositive), 250 (32.3%) reported regular cannabis use, 200 (26.4%) reported ever being diagnosed with anxiety, and 299 (39.3%) reported ever being diagnosed with depression or bipolar disorder at baseline. Regular cannabis use was positively associated with HIV-seropositivity (aOR=2.23, 95%CI:1.40-3.54) and previous mental health diagnosis (aOR=1.52, 95%CI: 1.00-2.31, p=0.05). Among those previously diagnosed with anxiety or depression/bipolar disorder, regular cannabis use was not associated with moderate/severe anxiety (aOR=1.16, 95%CI:0.69-1.94) or depression symptoms (aOR=0.96, 95%CI:0.59-1.58), respectively. Limitations: Because of observational study design, we are unable to determine absolute effect. Conclusions: Regular cannabis use was more likely among HIV-positive gbMSM and those previously diagnosed with a mental health disorder. No association was found between regular cannabis use and severity of anxious or depressive symptoms among those diagnosed with these conditions.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipMomentum is funded through the National Institute on Drug Abuse (R01DA031055-01A1) and the Canadian Institutes for Health Research (MOP-107544, FDN-143342, PJT-153139). NJL was supported by a CANFAR/CTN Postdoctoral Fellowship Award. DMM and NJL are supported by Scholar Awards from the Michael Smith Foundation for Health Research (#5209, #16863). HLA is supported by a Postdoctoral Fellowship Award from the Canadian Institutes of Health Research (Grant # MFE-152443).en_US
dc.identifier.citationChou, F. Y., Armstrong, H. L., Wang, L., Bacani, N., Lachowsky, N. J., Patterson, T. L., Walsh, Z., Olarewaju, G., Card, K. G., Roth, E. A., Hogg, R. S., & Moore, D. M. (2019). “A Longitudinal Analysis of Cannabis Use and Mental Health Symptoms Among Gay, Bisexual, and Other Men Who Have Sex with Men in Vancouver, Canada.” Journal of Affective Disorders, 247, 125–133. https://doi.org/10.1016/j.jad.2019.01.015en_US
dc.identifier.urihttps://doi.org/10.1016/j.jad.2019.01.015
dc.identifier.urihttp://hdl.handle.net/1828/13979
dc.language.isoenen_US
dc.publisherJournal of Affective Disordersen_US
dc.subjectCannabis
dc.subjectMental health
dc.subjectMen who have sex with men
dc.subjectAnxiety
dc.subjectDepression
dc.subjectLongitudinal
dc.subject.departmentSchool of Public Health and Social Policy
dc.titleA Longitudinal Analysis of Cannabis Use and Mental Health Symptoms Among Gay, Bisexual, and Other Men Who Have Sex with Men in Vancouver, Canadaen_US
dc.typePostprinten_US

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