Do you really need to drink eight 8-ounce glasses of water each day for good health?
Experts say "NO."
Heinz Valtin, MD, professor emeritus of physiology at Dartmouth Medical School and kidney and water balance specialist, believes that this guideline was fabricated from a recommendation of the Food and Nutrition Board of the National Research Council. The recommendation called for approximately "1 milliliter of water for each calorie of food," which would amount to roughly 64 to 80 ounces, or at least eight 8-ounce servings. The Board stated "most of this quantity is contained in prepared foods." The understanding was that water be contained in food, such as the water that is contained in the cells of vegetables, fruits, and beans.
Valtin says that, for most, how much you drink should be regulated by your thirst sensation. Drink when you are thirsty. Sure, taking prescription medications and extreme exercise can complicate the matter, but letting your thirst sensation tell you when you need to drink is smart.
These foods have a water content of 70-90% as compared with the 3% water content of the processed foods in the American diet. The foods of a whole natural plant-food diet can give you not only vital water, but also reduce your risk for cancer, osteoporosis, heart disease, and more.
You can read the trend on the McDougall Discussion Board moderated by Jeff Novick, MS RD.