How much of calories run through a body without getting used or saved as fat?

Question

I especially ask myself how much money is wasted through consuming unnecessary food in rich countries.

In: Biology

Answer 1

Basically none. The calories you eat are getting used. They’re stored as fat if you don’t need them immediately. What comes out the other end is the stuff we can’t digest like fibers.

Rich countries don’t waste food by eating it. They waste food by throwing away large parts of it.