You would have to work very hard to overdose


Several studies have shown that most Americans are low in potassium. A healthy person would need to eat 700 or 800 bananas per day to get enough potassium from that source alone. However, too much potassium can be just as dangerous as too little, as it can damage heart muscle. For a healthy person to reach that danger zone, they would need to eat 400 bananas in a day. If someone ate too much potassium from bananas, their stomach would stop them before they got sick.
Overall, eating two bananas a day is a good idea for healthy people. Those taking beta-blockers for heart disease should be cautious, as beta-blockers increase potassium levels. Diabetics may not want to eat bananas twice a day, as they are considered "medium" on the glycemic index. Otherwise, go for it. Research shows high potassium intake lowers the risk of death from any physical disorder by a solid 20%.
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