Theres a lot of information and misinformation about drinking water. Discover the truth about water benefits and whether you really need eight glasses of water a day.
1. Everyone needs to drink eight glasses of water a day.
Myth. Though water is the easiest and most economical fluid to keep you hydrated, the latest Institute of Medicine recommendation is that women should strive for about two liters or eight glasses a day and men should aim for three liters or 12 glasses a day of any fluid, not just water. “No one can figure out where this ‘eight glasses of water’ came from, but I believe it came from the old RDA [recommended daily allowance] for water that matched water requirements to calorie requirements,” notes Georgia Chavent, MS, RD, director of the Nutrition and Dietetics Program at the University of New Haven in West Haven, Conn. “The new requirement from the Institute of Medicine is much more generous and includes recommendations for total beverage consumption, not just water.”
2. Drinking water flushes toxins from your body.
Fact. Though water doesn’t necessarily neutralize toxins, the kidneys do use water to get rid of certain waste products. If you don’t drink enough water, your kidneys don’t have the amount of fluid they need to do their job properly. “If the body does not have sufficient water, then metabolic wastes will not be removed as efficiently as they should,” explains Amy Hess-Fischl, RD, CDE, of the University of Chicago Kovler Diabetes Center. “In essence, the body would be holding in toxins instead of expelling them, as is required for proper health.”