Cannabis use frequency and cannabis-related consequences in high-risk young adults across cannabis legalization

About The Study: In a study of 619 high-risk young adults in Ontario, Canada, individuals using cannabis frequently pre-legalization showed significant reductions in use and consequences over time, reflecting an aging out pattern. Small increases in use among participants with no pre-legalization use were observed over time, but without parallel changes in cannabis-related consequences. The results did not reveal substantive adverse near-term outcomes across the legalization period, although a within-participants design cannot rule out the possibility of alternative trajectories in the absence of legalization. 

Authors: Amanda Doggett, Ph.D., of McMaster University/St. Joseph’s Healthcare in Hamilton, Ontario, Canada, is the corresponding author. 

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(doi:10.1001/jamanetworkopen.2023.36035)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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