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Significantly more adults in the U.S. had marijuana use disorders in 2001-2002 than in 1991-1992, according to an article published in a recent issue of the Journal of the American Medical Association (JAMA).
According to Wilson M. Compton, M.D., and colleagues from the National Institutes on Health and Drug Abuse, the overall prevalence of marijuana use has remained stable during that time, indicating that increasing potency of the drug itself may be responsible for the increase in marijuana use disorders.
Researchers assessed the change in marijuana use, abuse, and dependence in the U.S. by comparing data from two studies: the 1991-1992 National Longitudinal Alcohol Epidemiologic Survey (N = 42,862), and the …