Can one drink make you smaller? According to a study that appears in this week’s Archives of Internal Medicine, light to moderate amounts of alcohol may help you gain less weight. Sounds too good to be true, right?

Intuition tells me that drinking alcohol can lead to weight gain because you end up taking in more calories than you burn (as well as the fact that those calories are carbohydrates). However, in over 19,000 women (aged 39 and older) with a normal body mass index (i.e. 18.5 to 25), women who reported not drinking any alcohol had the most weight gain over approximately 13 years. What’s more, women who reported drinking about 40 grams of alcohol daily were less likely to become overweight or obese. Women drinking less than 30 grams a day had a 30% lower risk of becoming overweight or obese than women who did not drink at all. In this study, the link between alcohol intake and overweight or obesity was seen for red or white wine, beer or liquor. The strongest association was seen for red wine.

In a separate analysis, the researchers also observed an association between declines in the amount of weight, increases in alcohol intake and older age. Comparatively, the magnitude of the weight gain was smaller in older versus younger women!

Importantly, the results seen in the study remained even after researchers made adjustments for lifestyle, clinical and dietary factors such as physical activity, the presence of chronic disease and consumption of other beverages (e.g. coffee, soft drinks, tea).

Granted, 40 grams is about 1.4 ounces or about half of a normal 5 ounce glass of wine. That may not meet the craving for a glass of wine. However, perhaps the larger take-away message is that a little wine can go a long way towards staving off weight gain. My RD friends might disagree but it’s an interesting ponder.

What do you think? Can one drink (or a half a drink) make you smaller?