What is the Okinawan diet?

With a high proportion of centenarians in its population, the Okinawan diet gets lots of interest. It focuses on low meat consumption and an emphasis on soy foods like tofu.

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What is the 5:2 diet?

Food is limited to 500 to 600 calories a day on two days of the week. The other five days you’ll eat a normal diet with a focus on high-protein, high-fiber foods.

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What is intermittent fasting?

It’s a way to cut calories, and its proponents cite cellular repair, improved insulin sensitivity and other benefits. But the science is weak.

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