以前延长寿命的成功方法涉及限制食物以接近饥饿状态，这个过程叫做热量限制。
Previous successes in extending lifespan have involved withdrawing food to the point of near starvation, a process called caloric restriction.
通过实验神奇般的延长寿命确有先例，例如限制卡路里的饮食。但谁愿意在半饥饿状态下延长寿命呢？
And while there are astonishing laboratory examples of life extension due to, for instance, restricted-calorie diets, who would want to live longer in a state of semi-starvation?
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