News Release

Cannabis legalization and opioid use disorder in Veterans Health Administration patients

JAMA Health Forum

Peer-Reviewed Publication

JAMA Network

About The Study: The results of this cohort study suggest that medical cannabis laws and recreational cannabis laws enactment was associated with greater opioid use disorder (OUD) prevalence in Veterans Health Administration patients over time, with the greatest increases among middle-aged and older patients and those with chronic pain. The findings did not support state cannabis legalization as a means of reducing the burden of OUD during the ongoing opioid epidemic.

Corresponding Author: To contact the corresponding author, Deborah S. Hasin, PhD, email dsh2@cumc.columbia.edu.

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

(doi:10.1001/jamahealthforum.2025.1369)

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 Health Forum: JAMA Health Forum is an international, peer-reviewed, online, open access journal that addresses health policy and strategies affecting medicine, health and health care. The journal publishes original research, evidence-based reports and opinion about national and global health policy; innovative approaches to health care delivery; and health care economics, access, quality, safety, equity and reform. Its distribution will be solely digital and all content will be freely available for anyone to read.


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