96: Vitamin E
Vitamin E may play a particularly important role in longevity. Animal studies in many different species show that supplementing the diet with vitamin E lengthens the life span. Fruit flies are a popular species for this type of experiment. Since the life span of fruit flies is ordinarily very short, it is easy to chart life-lengthening effects and track changes through successive generations. Such studies demonstrate that vitamin E supplementation increases the maximum life span for fruit flies, and similar benefits are presumed to be possible in humans.