can bananas make you sick
Hyperkalemia. Bananas are a great source of potassium, but too much of a good thing can be dangerous. Too many bananas cause an excess of potassium, which can trigger hyperkalemia. This condition causes nausea, a slower pulse, and an irregular heartbeat.ating more bananas than your body is able to tolerate can trigger headaches. This is because bananas contain certain amino acids that are known for causing blood vessels to dilate. This can be especially problematic if you eat bananas that are overripe.