I'm sure one can find mountains of ''research'' and info from vegan ''doctors'' saying humans are 'herbivores'. I challenge any self convinced herbivore to live in the wilderness on a vegan diet. Also, no cooking allowed, no fire, no tool use. Lions don't do any of that either and vegans say we need an even playing field.
It's fun to develop new diets but by the end of the day the human body does very well getting its nutrition from animal food ((some allergies here and there, but that's even more common with plant foods)). There were and are no vegan civilizations. Humans hunt(ed) and later on domesticated animals for meat and milk (and other things which are irrelevant here).
Imagine a herbivore species hunting other animals, domesticating them, and being able to digest meat...
