Why are bananas radioactive (but safe).
Did you know that the regular banana you hold in your hand is slightly radioactive? This is due to the naturally occurring radioactive isotope potassium-40, which is essential for life …
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- A Documentary short rated 9.4 — easy to watch in 1m.
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Did you know that the regular banana you hold in your hand is slightly radioactive? This is due to the naturally occurring radioactive isotope potassium-40, which is essential for life and is found in all living organisms, including your body.
One medium banana contains about 0.0001 millisieverts of radiation. This is so negligible that scientists even coined the term "banana dose equivalent" to compare it to other, more significant sources of radiation.
Besides bananas, potassium-40 is also present in potatoes, avocados, beans, and even Brazil nuts. A person receives approximately 0.3 millisieverts of natural background radiation daily from the sun, soil, and building materials.
Your body effectively regulates potassium levels, eliminating excess. To receive a lethal dose of 1 sievert of radiation from bananas alone, you would have to eat over 10 million of them in a short period of time.
So don't worry: bananas aren't a threat, just a healthy fruit. You'll get far more radiation from a ten-hour flight or a single chest X-ray. Enjoy your bananas!
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