Cannabis and mental health: Prevalence of use and modes of cannabis administration by mental health status

Background: Cannabis can have an adverse impact on some mental health conditions, while many consumers report using cannabis to manage or improve mental health. Little data exists on how patterns of cannabis use differ by mental health status. The current study examined the prevalence of cannabis use and modes of cannabis administration among consumers who experienced a mental health condition in the past 12-months. Methods: Data came from the International Cannabis Policy Study (Wave 1). Online surveys were conducted from Aug – Oct 2018 with 25,747 respondents aged 16–65, recruited from commercial panels in Canada and the US. Multinomial and binary regression models examined differences in cannabis prevalence and use of nine cannabis product types among those with and without self-reported past 12-month experience of anxiety, depression, PTSD, bipolar disorder, and psychosis. Results: Respondents with each of the five mental health conditions reported more frequent cannabis use than those without a mental health condition (p