> The chemical analysis of bones has demonstrated conclusively that early humans were not constantly teetering on the brink of starvation. On the contrary, they ate well despite having at their disposal only a few stone and wooden implements.

> These findings support a surprising thesis, one that reverses everything we used to believe about the deep history of humanity. It was not the hunter-gatherers who “suffered from systematic dietary deficiencies,” working themselves to the point of exhaustion yet attaining no lasting security.

I want to know what the expected lifespan was for these foragers. What was their childbirth success rate?

Without good dental hygiene adults can expect to lose their teeth by age 40, at which point (in a foraging society with primitive tools) that adult is going to be more than slightly malnutritioned.