Fruit Fly Intestine May Hold Secret to Fountain of Youth: Long-Lived Fruit Flies Offer Clues to Slowing Human Aging and Fighting Disease

"One of the few reliable ways to extend an organism's lifespan, be it a fruit fly or a mouse, is to restrict calorie intake. Now, a new study in fruit flies is helping to explain why such minimal diets are linked to longevity and offering clues to the effects of aging on stem cell behavior."