The average person can consume up to 15 liters of water in a 24-hour period, but drinking too much, too quickly can swell brain cells and cause head pressure.
Signs and Symptoms
Symptoms of fluid overload include a gradual mental dulling, drowsiness, weakness, confusion, coma, convulsions and death.
Excessive fluid intake can be dangerous because:
- It can cause pulmonary edema, a condition where water enters the lungs.
- It can dilute the electrolytes in your blood and cause low blood-sodium levels (hyponatremia).
- Excessive urination can flush out essential electrolytes, minerals and other compounds.