As you concede we shouldn't take away too many lessons from the Hadza unless we too hunt for our food with hand-made bows and arrows and forage for edible plant

As you concede we shouldn't take away too many lessons from the Hadza unless we too hunt for our food with hand-made bows and arrows and forage for edible plants. Takes lots of calories to do that, calories which don't lie around waiting to be turned into fat. A point you make about other very active people. No ill effect due to diet? Not sure about that given their life span though of course causes of death may be entirely unrelated to diet especially with their tough life style. We should also remember our very varied genetic inheritance as illustrated in stories of the 'my grandfather smoked like a chimney and died at 93' genre. True in my case but it's a risky bet to assume you've got the same genes. https://education.nationalgeographic.org/resource/hadza https://education.nationalgeographic.org/resource/hadza