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Survey: Medical marijuana impacts marijuana use disorder

from JAMA Psychiatry

Are U.S. state medical marijuana laws one of the underlying factors for increases in risk for adult cannabis use and cannabis use disorders seen since the early 1990s? In this analysis using U.S. 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. more


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