US Adult Illicit Cannabis Use, Cannabis Use Disorder, and Medical Marijuana Laws

6/1/17–In a JAMA Psychiatry published analysis using US national survey data collected in 1991-1992, 2001-2002, and 2012-2013 from 118 497 participants, the risk for cannabis use and cannabis use disorders increased at a significantly greater rate in states that passed medical marijuana laws than in states that did not. Read