Potassium

Illustration of a glowing yellow banana with radiation warning signs, symbolizing the natural radioactivity of bananas due to potassium-40.

Food
Fun

06/15/2025

How Radioactive Are Bananas? Way Less Than You Think

Think bananas are harmless? They are—but also slightly radioactive thanks to potassium-40. Learn why that’s totally normal, and why you’re actually more radioactive than your fruit bowl.

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