Eating Less Makes Monkeys Live Longer

Calorie restriction—in which people give up food for a whole day or drastically slash their caloric intake for a spell—is an unpleasant-sounding eating pattern. Yet a growing body of science suggests that it may improve health, fight disease and possibly even add years to a person's life. Weighing these potential benefits against the diet's difficult aspect of deprivation has proven tricky, and scientists don't agree on whether people should incorporate fasting into their routine.