News Release

Changes in cannabis-attributable hospitalizations following nonmedical cannabis legalization in Canada

JAMA Network Open

Peer-Reviewed Publication

JAMA Network

About The Study: This study of 26.9 million individuals in four Canadian provinces found that cannabis legalization with restrictions was not associated with an increase in hospitalizations due to cannabis but commercialization was. The findings suggest that commercialization of cannabis may be associated with increases in cannabis-related health harms, including cannabis-induced psychosis. 

Authors: Daniel T. Myran, M.D., M.P.H., of the Ottawa Hospital Research Institute in Ottawa, Ontario, Canada, is the corresponding author. 

To access the embargoed study: Visit our For The Media website at this link https://media.jamanetwork.com/

(doi:10.1001/jamanetworkopen.2023.36113)

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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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 


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