White bread may shave years off your life. But studies show that whole-wheat bread may be a life extender.

It's all thanks to  fiber. Fiber's long been known to boost both heart and bowel health. And now a new study reveals that fiber from whole grains may extend your life span.

Broad bread benefits

In a large study of middle-aged adults, those who consumed the most whole-grain fiber decreased their overall mortality rate by 22 percent! Not too shabby. The men in the study who achieved the life-extending benefit consumed at least 30 grams of fiber a day, while the longer-lived women got about 25 grams a day. And for reasons that aren't clear, fiber from whole grains had the best life-extending effect.

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