A federal health panel now recommends that men consume no more than one alcoholic drink a day. For 30 years, the Dietary Guidelines Advisory Committee set the limit at two drinks a day. (Women have long been urged to limit consumption to one drink a day.)

Other studies found that drinking under the previous two-beverage standard was actually good for the heart — and that moderate drinkers live longer than abstainers. So why was the earlier guideline chopped in half?

Follow Froma Harrop on Twitter @FromaHarrop. She can be reached at fharrop@gmail.com.

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