Research Alert

Understanding Association of Marijuana Use, Risk of Developing Cancer


JAMA Network Open


Media advisory: To contact corresponding author Deborah Korenstein, M.D., email Nicole McNamara at The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is the new online-only open access general medical journal from the JAMA Network. Every Wednesday and Friday, 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.

Bottom Line: The association between marijuana use and the risk of developing different kinds of cancer remained largely unclear in this analysis of 25 studies. The available studies were limited by small numbers of participants with high levels of marijuana use, poor quantification of marijuana use, and the presence of other factors such as cigarette smoking, which could influence results. Long-term studies are needed to improve understanding of marijuana’s association with the risk of developing cancer.

Authors: Deborah Korenstein, M.D., Memorial Sloan Kettering Cancer Center, New York, and coauthors



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

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