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【科普】放下水杯吧——喝水并非越多越好
Drinking a lot of water is supposed to be healthy, but there is apparently little scientific support for the belief. A review of clinical studies has found no evidence that drinking eight glasses of water a day, the usual recommendation, is beneficial to a healthy person.
Numerous claims have been made about water — that it prevents headaches, removes dangerous “poisons,” improves the function of various organs and is associated with reduced risk for various diseases. But none of these is supported by scientific evidence. The authors were not even able to find a study leading to the “eight glasses a day” rule, whose origin remains unknown.
The researchers, in the June issue of The Journal of the American Society of Nephrology, say some studies have found evidence that drinking extra water helps the kidneys clear sodium, and long-term sodium retention might increase the risk of hypertension, but no clinical significance for the phenomenon has been established. Water also helps clear urea, but urea is not a toxin.
There is “intriguing” evidence that water might help decrease appetite and control weight gain, write the authors, who say this might be worth more research.
“Under normal circumstances,” said Dr. Stanley Goldfarb, a co-author and a professor of medicine at the University of Pennsylvania, “drinking extra water is unnecessary. I want to relieve people of the burden of schlepping water bottles around all day long.”
http://www.nytimes.com/2008/04/29/health/research/29perc.html?ref=health 自己认领了 Perceptions: Go Ahead, Put the Water Bottle Down
观点：来吧，放下水杯，别让它成了你的负担
Drinking a lot of water is supposed to be healthy, but there is apparently little scientific support for the belief. A review of clinical studies has found no evidence that drinking eight glasses of water a day, the usual recommendation, is beneficial to a healthy person.
喝大量的水被认为是对健康有好处的，但是显然很少有科学证据证实这一点。一个新的临床研究结果显示(根据战友建议修改：回顾临床研究没有证据表明)，没有证据表明通常建议的一天8杯水对健康的人有好处。
Numerous claims have been made about water — that it prevents headaches, removes dangerous “poisons,” improves the function of various organs and is associated with reduced risk for various diseases. But none of these is supported by scientific evidence. The authors were not even able to find a study leading to the “eight glasses a day” rule, whose origin remains unknown.
关于喝水已经有数不清的说法——喝水能够预防头痛，清除体内危险的毒物，改善各个器官的功能，减少各种疾病的发病风险。但是所有这些都没有科学证据。发表这些说法的作者甚至找不到一个关于“一天8杯水”理论的研究，这个理论的来源仍是未知的。
The researchers, in the June issue of The Journal of the American Society of Nephrology, say some studies have found evidence that drinking extra water helps the kidneys clear sodium, and long-term sodium retention might increase the risk of hypertension, but no clinical significance for the phenomenon has been established. Water also helps clear urea, but urea is not a toxin.
研究者在六月的《The Journal of the American Society of Nephrology》上说，一些研究已经找到了喝过量的水能够帮助肾脏清除钠盐的证据——长期的钠盐潴留可能增加高血压的患病风险，但临床意义并不大。水也能帮助清除尿素，但尿素本身也并不是毒物。
There is “intriguing” evidence that water might help decrease appetite and control weight gain, write the authors, who say this might be worth more research.
还有一些有迷惑力的证据称，水能够帮助降低食欲，控制体重，这些作者声称，这一点值得更多的研究。
“Under normal circumstances,” said Dr. Stanley Goldfarb, a co-author and a professor of medicine at the University of Pennsylvania, “drinking extra water is unnecessary. I want to relieve people of the burden of schlepping water bottles around all day long.”
合著者之一、Pennsylvania大学医学教授Dr. Stanley Goldfarb说，“人应该处在在正常的机体环境中，喝过多的水是没有必要的。我想让人们从整天不情愿的喝水的负担中解脱出来。”
似乎没说到点子上，如果能介绍一下这个临床研究的具体思想和步骤就好了。 万事当有度！ 也没说为什么不好。
是通过循证医学证明的么？ a review of clinical studies 没有“新的”意思
它的意思就是 临床研究的观点是........ 不好意思 刚查了下review 在这里它的意思应该是“回顾”
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作者:admin@医学,生命科学 2011-02-25 17:14
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