The significant increase in human brain size is strongly linked to the consumption of animal foods.

“there's evidence that probably what had to happen to change our brains from an Australopithecus type animal which is a primate like animal to a Homo genus animal like Homo habilis or Homo erectus was the consumption of a large amount of meat”

“I would argue that thing was eating animals and eating all the animal but there's something magical that happened two million years ago”

“we saw this huge expansion of the human brain and that was because we were eating animals most likely this is all hypothetical but so many convincing theories now that it was animal nutrients density of calories that allowed our brains to just grow in size and humans to group generated neocortex to move out of the trees and become hunters”

“there was something magical about eating animals and then I heard these stories yeah Timmy a doctor there's thinking magic about cooking them too well we can talk about that yeah yeah yeah we should there are these theories about the cooking of food and I have some interesting thoughts about that too”

“for some reason we stopped eating plants we started eating animals and the human brain just really exploded in size it got much much bigger it grew from 600 or 400 CCS to a thousand CCS in a couple of million years and like a million years or 1.5 million years and then in the last 500,000 years it's grown even more up to a magnitude of 1500 CC”