12
Mar
2010
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Drinkers vs. Teetotallers
The study included more than 19,000 women aged 39 and older enrolled in the Women's Health Initiative.
None of the women were overweight when they entered the study, and all were asked about their daily alcohol consumption in an initial questionnaire.
About 40% reported that they did not drink at all, while 33% reported drinking the equivalent of about two alcoholic beverages a week. Another 20% reported having about a drink a day, 6% drank one to two alcoholic beverages a day, and 3% reported drinking more than this.
Over an average of 13 years of follow-up, most of the women in the study gained some weight.
But the women who reported being teetotallers when they entered the study gained the most weight. The women who reported drinking some alcohol, but no more than two drinks a day, gained the least.
This was true even after the researchers factored in variables that influence weight gain, including age, race, total calorie intake, activity level, and smoking status.
A typical non-light beer, 8-ounce glass of wine, or single-shot cocktail contains about 15 grams of alcohol.
Women in the study who drank from 15 to less than 30 grams of alcohol a day were 30% less likely to become overweight or obese than non-drinkers; the risk was 24% lower for women who drank from 5 to less than 15 grams of alcohol a day.
Past Research on Alcohol and Weight Gain
The study is not the first to suggest that drinking alcohol in moderation can benefit the waistline.
Epidemiologist Ahmed A. Arif, PhD, and Texas Tech University colleagues found the same thing when they analyzed data from a large national health survey in 2005.
Men and women in the survey who drank alcohol in moderation were less likely than non-drinkers to be obese.
But binge drinking and drinking four or more drinks a day were associated with an increased risk for being overweight or obese.