One of these scientists even showed that thinking, learning, and acting can turn our genes on or off, thus shaping our brain anatomy and our behavior --- surely one of the most extraordinary discoveries of the twentieth century.
如果是这样的话，一个人的意志或者态度真的可以治病，而不只是简单的影响病情的发展！但关键问题是大脑怎么知道which genes to turn on or off呢？
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