Increasing number of US adults using marijuana as fewer people perceive the drug as harmful

The Lancet Psychiatry: Increasing number of US adults using marijuana as fewer people perceive the drug as harmful | EurekAlert! Science News, Aug. 31, 2016

An increasing number of US adults are using marijuana, as fewer people perceive the drug as harmful, according to a survey of over 500000 US adults conducted between 2002 and 2014 published in The Lancet Psychiatry.

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