Wait, Didn’t Our Ancestors Eat Red Meat? // Food myths (video)

[HereSince1628]

73. Our physiology isn't very consistent with grazing

at all, we aren't set up to digest cellulose or host symbionts who can do it for us.

Chimps are also omnivores, although they are rather more insectivorous, and like us tend to be frugivorous or seed/nut eaters between feeding on meats.

As omnivores we have a number of things that aren't too obvious that lead toward thinking we are even more adapted to meat-eating than chimps

Most of us, certainly our ancient predecessors, pay no attention to chemical requirements of diet. Animal products in our diet are the natural source of our vitamin B12, we don't thrive without it. Life in higher latitudes likely contributed to reliance on animal products.

If we aren't taking supplements to be sure we get it, we probably don't need significant entres of it everyday... but many of us by choice and preference do eat some sort of eggs, meat, etc everyday. Our interest in the tastyness of animal products is at least in part an evolved capacity that with the current convenient over-availability helps guide us into bad habits.

Humans tend to eat meals rather than constantly feeding throughout the day, that's true across cultures and cultural development.

Episodic, sometimes binge, eating on meats followed by long periods of not eating is a common life-style feature of carnivores and scavengers.