Did I catch your attention? This is clearly one of those blog posts that you could live without knowing but now that you know you might have fun sharing this fact :-)

According to BBC Science Focus due to being rich in potassium, every banana is 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.

EPA.gov had something to say on this topic as well.

This of course is NOTHING to be worried about as we are exposed to natural radiation every day in small doses. It is a fun fact and a random just cuz thing I thought was interesting.