想苗条最好多多睡觉

　　“We’ve put so much emphasis on diet and exercise that we’ve failed to recognize the value of good sleep,” said Fred Turek, a physician at North-western University.

　　本周一来自诺福克的西弗吉尼亚医学院的一份对1000人做的研究表明，累计睡眠时间和体重指数刚好成反比，体重指数是一种以身高为基准来衡量体重的方法。

　　Men slept an average of 27 minutes less than women and overweight and obese² patients slept less than patients with normal weights, it said. In general the fatter subjects slept about 1.8 hours a week less than those with normal weight.

　　“Americans experience insufficient³ sleep and corpulent bodies. Clinicians are aware of the burden of obesity on patients,” the study said.

　　“我们的研究结果表明大量地增加睡眠时间是没有必要的，每晚多睡20分钟对降低体重指数似乎有一定的帮助。”该研究补充道。

　　“我们警告说，该研究并没有表明睡眠时间长短与肥胖之间有什么必然的因果关系。不过，调查显示延长睡眠时间确实可以有效减轻体重，这对于证明这一关系非常有帮助。”

　　The study was published in the Archives of Internal Medicine along with an editorial by Turek and Northwestern colleague Joseph Bass⁴ commenting on it and related research.

　　In an interview with Reuters, Turek said some studies have shown sleep deprivation⁵ causes declines in an appetite suppressing protein hormone⁶ called leptin, and increases in another hormone that causes a craving⁷ for food. In addition neuropeptides in the brain governing sleep and obesity appear to overlap⁸, he said.

　　该研究还提到，近年来发达国家肥胖症状以惊人的速度增长，在美国肥胖已成为一种普遍现象，并且引发了多种健康问题。 

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