Overhydration Risk: Is drinking only water dangerous in the summer? Learn the shocking truth from your doctor.
- bySherya
- 11 May, 2026
Overhydration: With the increasing heat across the country, cases are increasingly emerging where people drink plenty of water but fall ill due to a lack of essential minerals. In reality, sweat isn't just water.
Can drinking too much water be dangerous?
Can Drinking Too Much Water Be Dangerous? During the summer, we often believe that drinking plenty of water is the easiest way to stay healthy. But is just drinking water enough? A recent case completely changes this thinking. Let's find out what experts have to say about this.
What do experts say?
Dr. Romel Tikku told the Indian Express that a 25-year-old man rode his bike all day in the sun. He drank about 5 liters of water to keep himself hydrated, but didn't eat anything the entire day. No fruit, no salt-containing beverages, just plain water. Initially, he felt mild dizziness and nausea, which he dismissed as fatigue. However, within a few hours, his condition worsened, leading to slurred speech, excessive sleepiness, and confusion. Tests revealed that his sodium levels had dropped dangerously low, a condition known as acute hyponatremia.
Why does this happen?
This isn't an isolated incident. With the heat rising across the country, cases are increasingly emerging where people drink plenty of water but fall ill due to a lack of essential minerals. Sweat isn't just water; it also contains sodium, potassium, and other essential elements. When these elements are continuously depleted from the body and we continue to drink only water, their balance in the blood is disrupted, which can become a dangerous situation.
What problems does sodium deficiency cause?
Sodium deficiency is particularly dangerous for the brain. When sodium levels drop, water begins to accumulate in the body's cells, leading to swelling. Initially, symptoms include headache, fatigue, dizziness, and confusion, but if left untreated, this condition can lead to seizures or unconsciousness. On the other hand, if a person does not drink enough water, sodium levels can increase. This is called hypernatremia, which causes the body's cells to shrink. Symptoms include thirst, dry mouth, irritability, and in severe cases, seizures.
Potassium is also essential.
Potassium is equally important, but it's often overlooked. A deficiency can lead to muscle weakness, cramps, and heart rhythm disturbances. Therefore, drinking water alone isn't enough in the summer; maintaining a balance of essential nutrients in the body is equally crucial. Buttermilk, lemon water with salt and sugar, coconut water, and a balanced diet can help address this deficiency.
Keep these things in mind.
Dr. Romel Tikku says that drinking adequate water is the only real defense. It's important to take regular breaks, avoid exposure to the sun, and not ignore your body's signals. It's crucial to understand that your body needs more than just water, but also balanced nutrition. Ignoring this small thing can lead to a major problem.






