The New York Times reports:
Researchers at the Harvard Medical School and the National Institute on Aging report that a natural substance found in red wine, known as resveratrol, offsets the bad effects of a high-calorie diet in mice and significantly extends their lifespan. . . .
Resveratrol is found in the skin of grapes and in red wine and is conjectured to be a partial explanation for the French paradox, the puzzling fact that people in France tend to enjoy a high-fat diet yet suffer less heart disease than Americans.