[Knut]

Originally Posted by dissentowner

Isn't too much potassium poisonous? I thought I had heard that once.

http://blogs.howstuffworks.com/2009/...-many-bananas/

So to get a toxic dose of potassium from bananas, you would have to eat far more than 10 bananas.
If you look up the lethal dose for potassium chloride on a page like this, the oral value is 2,600 mg per kilogram. If you weigh 75 kilograms (165 pounds), you would need to consume 75 * 2,600 = 195,000 mg of potassium to reach fatal levels. That’s 487 bananas worth. Potassium chloride is only about half potassium, so you might need to eat fewer bananas (containing K rather than KCl) than that to achieve toxicity, say by half. But the result is the same – It is hard to imagine that people who are healthy are going to be killing themselves with bananas. It’s hard to imagine someone eating 25 bananas in a day, much less 250.

Answer is lots.