Too much protein in the diet may advance the aging process.

饮食中过多的蛋白质会使衰老的过程提前。

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About 60% of brain aging is within our control, she says, by maintaining vigorous exercise routines, a healthy diet, social engagement and stimulating activities or environments.

她说，约60%的大脑老化都是可以控制的，方法包括经常锻炼、健康饮食、与他人交往、加入激人奋进的活动或环境等。

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A study showed that animals that were given a diet without essential fatty acids developed skin dryness and signs of aging skin.

一项研究表明，在给动物的饮食中没有加入必须的脂肪酸，结果导致动物的皮毛干枯和出现皮肤老化的迹象。

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Richard Weindruch explains. "Our data show that there is about a three-fold higher risk of developing a disease of aging in those animals fed the normal diet as opposed to those that have been on caloric restriction since they were adults."

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"Everything we already know about fighting off chronic disease, like getting sufficient sleep, staying active throughout life, and having a healthy diet" may stave off premature aging of the immune system, too, Epel said.

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Looking at 2, 250 individuals from the Washington Heights-Inwood Columbia Aging Project, researchers found a 40 percent lower risk among those who stuck to this diet, scientists reported in the Annals of Neurology in 2006.

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One of the first solid clues that humans may possess genes that protect against aging came in the 1930s, when researchers at Cornell University showed that rats fed an ultralow-calorie diet lived much longer than normal.

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