  Banana. 
Bananas are known for being high in potassium, which makes them slightly more radioactive than the average food (because some naturally occurring potassium is the radioactive potassium-40 isotope). 
Source: Walmart 
Contributor: Theodore Gray 
Acquired: 8 April, 2009 
Text Updated: 9 April, 2009 
Price: $0.50 
Size: 7" 
Purity: 0.36%
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