Marijuana use in teenagers does not increase after a state legalizes medical marijuana, according to a study published in The Lancet Journal of Psychiatry. The research, by Deborah Hasin, PhD, and colleagues, is based on data from more than one million teenagers in 21 states where medical marijuana was legalized. Watch below, Dr. Hassin’s comments on the research team’s findings.

Dr. Hasin is a professor of epidemiology at the Department of Psychiatry and the Mailman School of Public Health at Columbia University Medical Center. Read more about the findings, and their implications here.

To speak further with the authors on the findings, please contact Rachel Yarmolinsky, Columbia University Department of Psychiatry, 646-774-5353 or ry2134@cumc.columbia.edu; or Stephanie Berger, Columbia University’s Mailman School of Public Health, 212-305-4372 or sb2247@cumc.columbia.edu.

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