What happened if you drink too much water?

Answer 1

Initial symptoms include having to urinate, and vomiting.

Drinking too much water can lead to a condition known as water intoxication and to a related problem resulting from the dilution of sodium in the body, hyponatremia. Water intoxication is most commonly seen in infants under six months of age and sometimes in athletes. A baby can get water intoxication as a result of drinking several bottles of water a day or from drinking infant formula that has been diluted too much. Athletes can also suffer from water intoxication. Athletes sweat heavily, losing both water and electrolytes.

Water intoxication and hyponatremia result when a dehydrated person drinks too much water without the accompanying electrolyte. Death can result.