[stcredzero]

We still don't understand enough about food to say...

Here here! The notion that we pretty much understand what's going on with food, digestion, and metabolism is as widespread as it is harmful. We have only scratched the surface.

I remember seeing a diagram of human metabolism during a talk. It was huge and messy! Spaghetti-coded-Rube-Goldberg-intertwined-messy! And it's only a diagram of what we do understand -- there's even more in there! Biology at the cellular and molecular level was not "designed" to be understood by a human intelligence.