Use of tobacco and cannabis following state-level cannabis legalization

JAMA Network Open

2025-07-11

(Press-News.org) About The Study: In this longitudinal cohort study, recreational cannabis legalization was associated with more cannabis and electronic nicotine delivery systems use after 5 years and no significant change in cigarette use. Furthermore, cannabis use increased over time, underscoring the importance of studying commercialization policy going forward. Based on the present results, it is unlikely recreational cannabis legalization has been associated with a large increase in cigarette use, but increases in use of cannabis and vaped nicotine bear close monitoring as retail cannabis rapidly expands.

Corresponding Author: To contact the corresponding author, Andrew S. Hyatt, MD, email ashyatt@challiance.org.

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

(doi:10.1001/jamanetworkopen.2025.20093)

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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Use of tobacco and cannabis following state-level cannabis legalization

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