Depriving ourselves of food to the point of near-starvation doesn't sound very appealing, but it could prolong our lives and prevent the onset of age-related diseases. A combined analysis of two long-running studies shows that caloric restriction does indeed work in monkeys, hinting at its potential to work in humans. More research is needed before we can be sure this translates to humans, so you should probably avoid any drastic dietary measures for now.