Are Bananas Radioactive? The Fruit That Trips Alarms - Urban Legend #9

Send us Fan Mail Bananas are naturally radioactive because of the radioactive isotope called potassium-40. Radioactive, yes. But, a normal serving of banana is only a tiny dose of radiation. Here’s what that means, and why a crate of them can trip a detector. ## What You'll Learn - Why bananas contain radioactive potassium-40 - What a Banana Equivalent Dose actually measures - Why radioactive does not automatically mean dangerous ## Key Claims - Bananas contain naturally occurring potassium-40, so they give off a very small, measurable amount of radiation. - Banana Equivalent Dose is an informal comparison tool, not an official safety unit. - Large loads of potassium-rich goods can trigger cargo radiation detectors; the alarm is not a health danger. ## Sources - https://www.epa.gov/radtown/natural-radioactivity-food — U.S. Environmental Protection Agency on bananas and radiation -https://www.nrc.gov/facilities-safety/radiation-protection/radiation-all-around-us/doses-in-our-daily-lives — the U.S. Environmental Protection Agency says that you would need to eat about 100 bananas to reach the same level of radiation - https://www.congress.gov/event/109th-congress/house-event/LC11509/text "CONCERNS WITH THE RPM PROGRAM High Level of False Alarms — At the outset of this program, we were advised by Pacific Northwest  Labs that we could expect the alarm rate to be 1 in every 400  containers. In the Port of New York and New Jersey, we are now  averaging about 150 alarms a day from the RPMs, which is approximately  1 in 40 containers, ten times more than was expected...This results in a high level of innocent or nuisance  alarms...bananas, kitty litter, fire detectors and ceramics that move through  the port, even truck drivers who not long before had medical tests or  treatments with radioactive isotopes."  - https://www.nextgov.com/cybersecurity/2016/01/lab-reduces-false-radiation-alarms-at-ports/221209/ - Polonium-210 budget in cigarettes - PubMed https://pubmed.ncbi.nlm.nih.gov/14557035/  - Are dental x-rays safe? Content analysis of English and Chinese YouTube videos - PMC https://pmc.ncbi.nlm.nih.gov/articles/PMC10259113/ - Mansfield, Gary. “Banana Equivalent Dose.” RADSAFE mailing-list message, March 7, 1995, 08:34:31 −0800. Archived in the Illinois Institute of Technology RADSAFE archive. This is an original historical document. “I have found this ‘Banana Equivalent Dose’ very useful in attempting to explain infinitesmal doses (and corresponding infinitesmal risks) to members of the public.”   The smoking conversion calculation is: 0.1 μSv + 251 μSv  —-----------------------  = 4,440 BED. 0.1 μSv / BED  - Sound effects by Simmi SimSim & freesound_community from Pixabay [11/9/26 - I don't wanna jinx it, but I think something may have just clicked for me and this whole...podcasting thing. Maybe it really is just a matter of building the muscle memories that Dave Campbell and David Beckemeyer have been poking the rest of us to build. Or, maybe I didn't have any significant technological malfunctions for the second day in a row. Nah, let's go with D&D. Thank you guys!] Support the show If you have an idea for a topic, or some sort of impressive tip, trick or life hack that you MUST share, I want to hear about it. Please reach out to me at: [email protected]  Thank you for listening. Please SUBSCRIBE, FOLLOW, RATE and REVIEW wherever you listen (because that stuff may count. Who knew?!) https://www.linkedin.com/in/speakingofvo/ https://www.instagram.com/OhThatsAFact