But what if my digestive system is capable of nuclear fission?

One more acktchuallay to add; the big C calories in food is 1000 little c calories, so yellow cake only has 20,000,000, take that, uh, whoever.

Some fungi found to be thriving in Chernobyl, and seemingly growing towards radiation sources, are hypothesized to be able to capture and use the radiation energy to support biological processes. If it turns out that some fungi can synthesize compounds that convert ionizing radiation into chemical bonds that can be metabolized by biological organisms, one could theoretically imagine some kind of symbiotic relationship between organisms that comes out of that.

So how many bioavailable calories did I just consume then, Dr. PotatoesFall?

Give a man a fish, and you feed him for a day.

Give a man uranium and you feed him for life.....which also happens to be a day.

Weapons of M~y~ass destruction.

It's a big C not the little c