In another peer-reviewed study, researchers have found that states allowing cannabis for medical purposes do not see a subsequent increase in cannabis use among teenagers.

The latest meta-analysis from scientists at Columbia University looked at 11 different studies based on four ongoing national surveys of teen behavior and substance use. According to the findings, none of the 11 studies found significant changes in teen cannabis use after passage of medical cannabis laws.

Deborah S. Hasin, professor of Epidemiology at Columbia’s Mailman School and lead author of the study commented in a press release, “For now, there appears to be no basis for the argument that legalizing medical marijuana has increased teens' use of the drug.”

Opponents of medical cannabis have often relied on fear tactics to suggest that medical cannabis laws lead to more teen use. This latest study shows once again that those predictions are unfounded.

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