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Marijuana: Selected effects on brain, body & behavior

National Institutes of Health; U.S. Department of Health and Human Services – 2012

A presentation on the effects of marijuana use. Presents statistics on the prevalence of marijuana use, and data on dependence/abuse as compared to other drugs. Also presents data on marijuana use among youth. Describes the effects of marijuana on different parts of the brain. Lists its acute effects during the intoxication stage. Provides data on the long-term negative consequences of marijuana use in the areas of academic performance, socioeconomic status, and mental health. Notes rates of marijuana dependence among daily users and those who start in adolescence. Describes symptoms of marijuana withdrawal. Discusses possible impact of chronic use on brain structure and function, including motor deficits and cerebellar volume.