You Don’t Need To Drink 8 Glasses Of Water A Day

Kevin Drum debunks a myth:

I'm amused by the fact that every couple of years someone rediscovers this myth, looks into it, and publishes a journal article debunking it. Valtin wrote about water requirements in 2002, the Institute of Medicine tackled the subject in 2004, and in 2008 Dan Negoianu and Stanley Goldfarb published a comprehensive piece in the Journal of the American Society of Nephrology concluding that for normal, healthy people there's no evidence one way or the other that drinking lots of water has any health benefits. It doesn't clear your kidneys of toxins, it doesn't improve organ function, it doesn't help you lose weight, it doesn't prevent headaches, and it doesn't improve your skin tone. (On the other hand, it doesn't do any harm, either. If you're thirsty, feel free to drink some water.)