Baking for winter holidays is a tradition that may have a sound medical basis. In midwinter, when days are short, many people suffer from a specific type of seasonal depression caused by lack of sunlight. Carbohydrates, both sugars and starches, boost the brain's levels of serotonin, a neurotransmitter that improves the mood. In this respect, carbohydrates act on the brain in the same way as some antidepressants. Thus, eating holiday cookies may provide an effective form of self-prescribed medication.
这个假设为什么不对呀~~~?
The extra consumption of carbohydrates during winter does not cause so much weigh gain that many people become depressed.
[此贴子已经被作者于2004-3-12 12:20:13编辑过] | 
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