Did you know that bananas are radioactive. Due to being rich in potassium, every banana is actually slightly radioactive thanks to containing the natural isotope potassium-40. Interestingly, your body contains around 16mg of potassium-40, meaning you’re around 280 times more radioactive than a banana already.
Any excess potassium-40 you gain from a banana is excreted out within a few hours.
The Haus of Dcaligari 