People who drink in moderation tend to be better educated and more well off, which increases their odds of being healthy. Photographer: Katsiaryna Pakhoma/iStockphoto hide caption

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A meeting of Alcoholics Anonymous in the 1950s was based on much the same 12-step program used today. Bettmann/Corbis hide caption

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Critic Faults Alcoholics Anonymous For Lack Of Evidence
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Rethinking Alcohol: Can Heavy Drinkers Learn To Cut Back?
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Women who consume eight or more drinks per week are considered excessive drinkers, according to the CDC. Breast cancer, liver disease and heart disease have all been linked to excessive drinking over time. Ann Boyajian/Illustration Works/Corbis hide caption

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Moderate Drinker Or Alcoholic? Many Americans Fall In Between
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Eighty percent of college students drink, and schools have had little success reducing those numbers, or the problems caused by excessive alcohol. Toby Talbot/AP hide caption

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