Prevalence of Marijuana Use Among U.S. Adults Doubles Over Past Decade

Surveys show 9.5 percent of Americans use marijuana; 30 percent of users meet criteria for a disorder

(October 21, 2015)CNBNEWSNET–The percentage of Americans who reported using marijuana in the past year more than doubled between 2001-2002 and 2012-2013, and the increase in marijuana use disorder during that time was nearly as large. Past year marijuana use rose from 4.1 percent to 9.5 percent of the U.S. adult population, while the prevalence of marijuana use disorder rose from 1.5 percent to 2.9 percent, according to national surveys conducted by the National Institute on Alcohol Abuse and Alcoholism (NIAAA), part of the National Institutes of Health.