Man's limbs paralyzed by extreme low potassium from sweating in heat, drinking only water

A man working in a hot, non-air-conditioned workshop in Taiwan suffered a near-fatal health crisis after excessive sweating led to dangerously low potassium levels. The 48-year-old, identified only by his surname Liu, was only drinking plain water, which doctors say exacerbated the electrolyte imbalance.

Liu experienced progressive weakness, initially in his arms, making it impossible to lift them. His condition worsened over six days, leading to paralysis in his lower limbs and an inability to stand. He was rushed to the hospital by emergency services.

“

If blood potassium is below 2 mmol/L, it can cause muscle weakness, paralysis, arrhythmia, low blood pressure, and in severe cases, respiratory failure, altered consciousness, or cardiac arrest.

Doctors at Changhua Hospital found Liu's blood potassium levels had plummeted to 1.5 mmol/L, a critical level far below the normal 3.5 to 5.5 mmol/L. His muscle enzyme levels were also alarmingly high, indicating severe muscle damage and rhabdomyolysis, a condition where damaged muscle tissue breaks down rapidly. He was treated with high-dose potassium supplements and is now recovering.

Physicians warn that prolonged sweating, especially in hot environments or during strenuous exercise, can deplete essential electrolytes like potassium. They stress the importance of rehydrating not just with water, but also with electrolyte-rich beverages such as sports drinks, coconut water, or milk. Consuming potassium-rich foods like bananas, kiwis, tomatoes, and spinach is also recommended. Individuals experiencing unusual fatigue, cramps, limb weakness, or palpitations should seek immediate medical attention.

“

Outdoor and hot environment workers, and those engaging in high-intensity exercise, should supplement with electrolyte-containing drinks, such as sports drinks, in addition to drinking water.