Five Years of Legal Cannabis: What Have We Learned?

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Event Information

September 14, 2023
7:00-8:00pm (ET)
Virtual on Zoom

This session shed light on how the change in cannabis’s legal status has affected the landscape of mental health and substance use research and treatment. Our panel of experts explored various facets of cannabis legalization, focusing on the public health and research dimensions of this transformative policy change. Viewers can expect an informed and data-driven conversation that assesses the benefits, challenges, and unforeseen consequences that have emerged since legalization.

“Five Years of Legal Cannabis in Canada: What Have We Learned?” was an insightful and engaging discussion, bringing together academic researchers and policy analysts to reflect on the implications of cannabis legalization.


  • Discussed what have we learned since recreational cannabis was legalized in 2018.
  • Explored how legalization has impacted the mental health and substance use health of people in Canada.
  • Learned how legal recreational cannabis has affected cannabis use research and treatment.



Dr. Sidney Kennedy
Executive Director of HRI


Dr. James MacKillop
HRI Senior Scientist, Tier 1 Canada Research Chair in Translational Addiction Research, Professor of Psychiatry and Behavioural Neurosciences at McMaster University

Dr. Alexander Caudarella
Family physician and Chief Executive Officer at Canadian Centre on Substance Use and Addiction

Michael DeVillaer
Professor in the Department of Psychiatry and Behavioral Neurosciences at McMaster University. Author of the upcoming book, “Buzz Kill: The Corporatization of Cannabis”.