Changing your sleep may explain why calorie restriction extends lifespan

Many studies have found that calorie restriction extends the lifespan of animals such as worms, flies, mice and even monkeys.

Severely cutting the calories you eat may expand your lifespan, and now we have an idea of why. A study in which people ate 15 per cent fewer calories than usual has found that eating a lot less has big effects on what happens to the body during sleep.