The guiding principle of 'paleo' is to only eat foods that were consumed by our Paleolithic ancestors. There's only one problem: almost everything we think we know about prehistoric humans' diets is based on conjecture. (There were no caveman cookbooks or reality TV shows, sadly.) In other words, paleo "experts" like Pete Evans are guessing about the past.
As it turns out, a lot of this guesswork has been flat-out wrong. A new analysis of Neanderthal teeth uncovered in Spain and Belgium has discovered a lot more variation in Paleolithic diets than we previously thought. Here's the evidence.