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Alcohol is the most commonly used central nervous system (CNS) depressant in the world. A 2006 survey conducted by the Substance Abuse and Mental Health Services Administration found that, in the past month, 50.9% of individuals in the United States used alcohol, 23.0% had engaged in binge drinking (five or more drinks on one occasion), and 6.9% were considered heavy drinkers (five or more episodes of binge drinking in 1 month). Individuals 21 to 25 years of age were the heaviest users, with 68.6% reporting use in the past month, 50% reporting at least one episode of binge drinking, and 16.7% classified as heavy alcohol users. As would be expected based on the high rates of use, mental and physical disorders resulting from the excessive ...

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