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Science Does Not Support Old Maxim That People Need Eight Glasses Of Water Day

August 24, 2015: 12:00 AM EST
A pediatrician who has looked closely at the scientific evidence says that dehydration is simply not the common problem, not even remotely the global epidemic, some researchers (and water vendors) keep saying it is. Yet people are constantly being told to drink eight glasses of water a day. The truth is that people are hydrated by almost any liquid they drink – beer, coffee, tea, etc. – and an awful lot of foods they eat, including fruits and vegetables. Says Dr. Aaron E. Carroll: “Contrary to many stories you may hear, there’s no real scientific proof that, for otherwise healthy people, drinking extra water has any health benefits.”
Aaron E. Carroll, "No, You Do Not Have to Drink 8 Glasses of Water a Day", The New York Times, August 24, 2015, © The New York Times Company
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