Can Drinking Too Much Water Be Dangerous
Yes, drinking excessive water in a short period can overwhelm the body. The condition is called water intoxication or hyponatremia, where sodium levels in the blood drop dangerously low. This can cause brain swelling, seizures, and coma, which may look similar to drowning because fluid balance in the body is disrupted.
How Much Water Is Too Much
The kidneys can usually excrete about 0.8 to 1.0 liters of water per hour. Consistently drinking more than this over several hours increases risk. According to the National Institutes of Health, symptoms of overhydration include nausea, headache, confusion, and in severe cases, loss of consciousness.
Who Is Most at Risk
Endurance athletes, military personnel, and individuals with certain kidney or heart conditions face higher risk. Rapid intake of large volumes of plain water during or after intense activity is a common trigger. If you suspect water intoxication, seek emergency medical help immediately.
Read more about hyponatremia and overhydration from the National Institutes of Health.
