Cannabis use among individuals with psychosis after state-level commercial cannabis legalization

JAMA Psychiatry

2025-10-08

(Press-News.org) About The Study: In this study, individuals with psychosis reported a large increase in current cannabis use following legalization and commercialization of cannabis in their state, and by larger amounts than previously reported estimates of the general population. Given how cannabis can negatively affect illness course and health service utilization in individuals with psychosis, these results should be considered by regulators designing policies around taxation, potency, advertising, and health warnings.

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/

(10.1001/jamapsychiatry.2025.2539)

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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Cannabis use among individuals with psychosis after state-level commercial cannabis legalization

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