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Apr 26

Could a Calorie-Restricted Diet or Fasting Help You Live Longer? – The New York Times

Long Term Weight Loss Comments Off on Could a Calorie-Restricted Diet or Fasting Help You Live Longer? – The New York Times

If you put a lab mouse on a diet, cutting the animals caloric intake by 30 to 40 percent, it will live, on average, about 30 percent longer. The calorie restriction, as the intervention is technically called, cant be so extreme that the animal is malnourished, but it should be aggressive enough to trigger some key biological changes.

Scientists first discovered this phenomenon in the 1930s, and over the past 90 years it has been replicated in species ranging from worms to monkeys. The subsequent studies also found that many of the calorie-restricted animals were less likely to develop cancer and other chronic diseases related to aging.

But despite all the research on animals, there remain a lot of unknowns. Experts are still debating how it works, and whether its the number of calories consumed or the window of time in which they are eaten (also known as intermittent fasting) that matters more.

And its still frustratingly uncertain whether eating less can help people live longer, as well. Aging experts are notorious for experimenting on themselves with different diet regimens, but actual longevity studies are scant and difficult to pull off because they take, well, a long time.

Heres a look at what scientists have learned so far, mostly through seminal animal studies, and what they think it might mean for humans.

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Could a Calorie-Restricted Diet or Fasting Help You Live Longer? - The New York Times

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