Comment by hristov

Fructose is a hallmark of primate diet. Refined fructose is not. The only refined fructose in the wild is honey and that is way too rare and too well defended to be the hallmark of anyone's diet (other than honeybees, of course).

Humans are perfectly capable of eating all the fructose they may ever want in its unrefined state as it appears in nature without any adverse effects. I.e. you can eat fruit until you are full, and nothing bad will happen. It is in fact quite healthy. But once you refine it into pure fructose, such as crystal sugar or molasses, then all hell breaks loose.