About The Study: This study of 6.6 million individuals in Demark found that cannabis use disorder was associated with an increased risk of psychotic and nonpsychotic bipolar disorder and unipolar depression. These findings may inform policies regarding the legal status and control of cannabis use.
Authors: Oskar Hougaard Jefsen, M.D., of Aarhus University Hospital–Psychiatry in Aarhus, Denmark, is the corresponding author.
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(10.1001/jamapsychiatry.2023.1256)
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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JAMA Psychiatry