Is 6-8 Glasses of Water a Day Enough?

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Pure WaterVery few people will argue that we don’t need to drink at least 6-8 glasses of water a day. The research is already in. A 2002 study involving 20,297 people found those who drank at least five glasses of water a day were 41% less likely to develop fatal coronary artery disease. A 1999 Harvard study of 47,909 health professionals showed that six cups of water per day reduced the risk of bladder cancer by over 50%. A 2009 study of 58 children showed that those who drank more water performed better on cognitive tests. And there’s more.

In 2004, the National Academy of Sciences released a study showing that the average woman needs about 91 ounces of water per day and the average man needs about 125 ounces per day. The report indicated that about 20% of hydration can come from a typical diet, leaving 73 ounces of water for the average adult woman and 100 ounces of water for the average adult man. That’s a lot more water than the adage of 6-8 glasses a day (48-64 oz).

Dr. Jethro Kloss studied water use and fluid loss in the 1930s. He found that every day the average person loses about 550 cubic centimeters of water through the skin, 440 cc through the lungs, 1550 through the urine, and another 150 cc through the stool. This adds up to 2650 cc per day in fluid loss, equivalent to a little over two and a half quarts (about 85 fluid ounces). He wasn’t too far off.

For more research and information on water, including filtration, water treatment, chlorination and water pollution, see Pure Water: The Science of Water.

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Case Adams, Naturopath

Case Adams is a California Naturopath, board certified as an Alternative Medical Practitioner, with diplomas in Aromatherapy, Bach Flower Remedies, Blood Chemistry, Clinical Nutritional Counseling, and Colon Hydrotherapy. After receiving his BA with premed coursework, he completed five years of post-graduate Naturopathic studies and clinical training and received a Doctorate in Integrative Health Sciences and a degree in Naturopathy. Later he completed a PhD (nontraditional) in Natural Health Sciences and his 332-page thesis entitled “The Healing Power of Nature’s Elements” has been published into book form under the title “Total Harmonic.” A listing of many of his books: http://www.realnatural.org/category/books/

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