The prevalence of cannabis use pre-versus post-cannabis legalization in Canada by mental health status: findings from national repeat cross-sectional surveys

Abstract Background: The bidirectional relationship between cannabis use and mental health is complex. With the liberalization of cannabis laws in many countries, it is increasingly important to understand the impacts of cannabis legalization on individuals with mental health conditions. This study aimed to examine changes in cannabis use by mental health status pre-versus 5-years post-legalization of recreational cannabis in Canada. Methods: Data were from the International Cannabis Policy Study’s national repeat cross-sectional surveys, conducted annually in Canada between 2018 and