[morphing libertarian]

To me it’s intuitive medicine, diet, so forth. It’s infant mortality rates which are cited for low life averages before 1920.

couple of links

https://www.verywellhealth.com/longevity-throughout-history-2224054

https://www.livescience.com/10569-human-lifespans-constant-2-000-years.html

[DoughtyOne]

I think the deal may have centered around the middle to upper class. Perhaps in those sectors things were better than we think they were on the face of it.

Thanks for the links.