I don't know about your first sentence. It seems more likely animals and humans would evolve to eat what they needed. That certainly seems like it would be evol

I don't know about your first sentence. It seems more likely animals and humans would evolve to eat what they needed. That certainly seems like it would be evolutionarily preferred. But I do agree junk (which didn't exist through most of evolution) is easier to eat and that is part of our problem.