Question: Can You Drink Too Much Water?
Answer: Your body needs water. You either need to drink water or other healthy beverages, but your body wasn't designed to get all of the water you need for a whole day in just one sitting. You can drink a large amount of water throughout the course of a full day, but drinking a gallon or two of water all at once is dangerous. In fact, it can be life-threatening. Hyponatremia, which is sometimes called water intoxication, means "low sodium in the blood." It occurs when someone drinks enormous amounts of water and/or loses too much salt from the body in a short time. Drinking too much water overwhelms the kidneys so they can't process and eliminate the water fast enough, and the levels of sodium in your blood can get too low. Severe sodium deficiency can lead to twitching, seizures and even death.
Hyponatremia doesn't happen when a healthy person spreads his or her water intake over the course of the full day. It can happen when marathon runners drink gallons of water and don't replace the electrolytes during a race, or when people with certain psychological disorders can't stop themselves from drinking water. Hyponatremia can also occur in older people and people with certain medical conditions. Someone with hyponatremia needs to see a doctor for diagnosis and treatment.
More About Drinking Water
- Could dehydration be linked to back pain? One expert thinks so: Back Pain and Chronic Dehydration
- Lack of water might also lead to headaches. Learn more: Dehydration and Headaches
- Will drinking water increase your chance of success with a weight loss diet? Find out: Will Drinking Water Help Me Lose Weight?
- You've been told to drink more water when it's hot. Find out why: Why Do I Need More Water When It's Hot?
- Find out how much water you need every day with my hydration calculator and keep track of your water intake with a FIT Clip.
Source:
American Family Physician. "Management of Hyponatremia." Accessed February 9, 2012. http://www.aafp.org/afp/2004/0515/p2387.html.
