By Claudia Wallis, contributor
October 16, 2009
October 16, 2009
NEW YORK (Fortune) -- Why do some people get hooked on drugs and alcohol, while others can party hard and walk away? We tend to think it's a matter of willpower or moral fiber, but it has more to do with a roll of the genetic dice.
Large-scale studies of twins provide strong evidence that addiction ranks "among the most heritable of mental illnesses," says Dr. David Goldman, who heads the Laboratory of Neurogenetics at the National Institute on Alcohol Abuse and Alcoholism. . . . . .
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