当节食者抗拒垃圾食物时，他们大脑的某个区域变得很活跃。

A certain region of the brain lit up when the dieters resisted junk food.

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当节食者谈论新陈代谢时，他们通常不谈论物理和化学的一长串过程。

When dieters talk about metabolism, they usually aren't talking about a long list of physical and chemical processes.

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所以当节食包括这两个方面的时候，就像研究者总结出来的那样，可能会对心理和生理功能产生危害。

So when dieting includes both activities, it may be, as the researchers concluded, "deleterious to psychological well-being and biological functioning."

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