Do you want to live longer? The answer is a simple change in diet. The key to a better old age may be to reduce the amount of food on our plates, via an approach called “calorie restriction”. This diet goes further than cutting back on fatty foods from time-to-time; it’s about making gradual and careful reductions in portion size permanently. Across the animal kingdom, in other words, calorie restriction has proven the best remedy for the ravages of life. And it’s possible that humans have just as much to gain.
http://www.bbc.com/future/story/20170601-the-secret-to-a-long-and-healthy-life-eat-less
