The second misguided assumption that many such diets reveal is that they seem to presume that food is merely for survival. The evolutionary truth is that food is for more than just survival. Food is more than nutrients, vitamins, and calories. Like all animals, indeed all heterotrophs, we eat to acquire the energy and nutrients necessary to be alive. But the human relationship with food, like that with sex, has expanded beyond its original purpose. Humans no longer eat merely to satisfy energetic requirements, any more than we have sex just to make babies.
