Doctors at the University of Pennsylvania are debunking a long held health myth that we should all drink 8 or more glasses of water a day. Misconceptions ranging from "it improves skin tone" to "it flushes all the toxins out" have no scientific backing, and no one seems to even know where the advice originated. With common sense abounding, Dr. Stanley Goldfarb of the University states, "If you’re thirsty, drink. If you’re not thirsty, you needn’t drink."
It stands to reason people who exercise or otherwise exert themselves need to replace the water they lose, but the researchers could find no conclusive evidence that 8 glasses a day under normal conditions attributed to better health, and too much water can actually affect the balance of body salts (hyponatremia) leading to a condition commonly known as water poisoning. "Those individuals that enjoy going to the bathroom would benefit from high fluid intake. But others definitely would not," Goldfarb said.
Similarly tagged OmniNerd content: