Risk 5: Hyperkalemia

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Bananas are rich in potassium, and eating too much of them can lead to hyperkalemia, an abnormally high potassium in the blood. Symptoms of hyperkalemia have been reported to include muscle weakness, temporary paralysis and irregular heartbeat.

However, according to some calculations, hyperkalemia only develops when more than 40 bananas are eaten in a short period of time. Therefore, there is no need to be overly concerned about this risk if you consume a moderate amount of bananas.

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