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Marijuana study: Number of Americans toking up doubles in 10 years
DENVER -- A heck of a lot more Americans were toking up in 2012-13 than 10 years before -- and not for medical reasons, either -- according to a new study. The percentage of American adults who had used marijuana within the last year was 9.5%, the study found. That compared to 4.1% in 2001-02. The study -- published this week in Jama Psychiatry, a monthly journal published by the American Medical Association -- was sponsored by the National Institute on Alcohol Abuse and Alcoholism. It was based on in-person interviews with more than 36,000 Americans over the age of 18.