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Can you drink too much water?

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Quick Answer

Drinking too much water can cause water intoxication, which can result in a condition called hyponatremia. In hyponatremia, the blood's sodium levels become diluted due to the amount of water being consumed, setting off a reaction that leads to swelling in the body's cells, according to Mayo Clinic.

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Full Answer

Hyponatremia is most commonly seen in young infants and athletes, according to About.com. Symptoms of hyponatremia include nausea, headache, confusion, lethargy, irritability and muscle weakness. In severe cases of untreated hyponatremia, seizures, coma and death are possible. Treatment for hyponatremia can range from cutting back on water intake to receiving IV fluids and medications, according to Mayo Clinic.

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