Kyle Harper

It had changed – so it changed our labor regimes.

It changed our diet most of all.

Foragers tend –

to eat high-protein, high-fat-ish diets with no refined carbohydrates but like limited carbs and it's a very varied, highly varied diet.

Sedentary farmers tend to eat more monotonous diets and they tend to be like dependent on grains and starches.

So like very narrow spectrum for your calories.

So changes in labor regime, changes in the diet.

And then changes in lifestyle, being sedentary and living in big populations that then puts you in proximity to other humans, puts you in proximity to human waste.

So feces are a major, major conduit of infection.

And it puts you into proximity to the air that they breathe, which is conducive to respiratory diseases.

So this transition –

Which, by the way, takes thousands of years, right?

It's one of these things that's more of a process than an event.

But it has massive implications for human health, including the infectious disease environment that we inhabit.

So it's not like hunter-gatherers were living in paradise.

Like the infectious diseases that they had were seriously burdensome.

They sucked and probably most people died of infectious disease.

Malaria is a really, really old disease.

Lots of diseases existed in the Pleistocene in like our Paleolithic past.

So it's not like it was eaten.