After my genealogy research I no longer buy life expectancy averages.
All through my family back into the 1500s I found lots of people living well into their 80s and even into their 90s regardless of wealth or social standing. I did find a lot of things that would drive the overall averages down.
A lot of women died fairly young after having 9 or 12 children. Of those 9 or 12 children it wasn’t unusual for 4 or 5 to die before 10 years old. Prior to 1850 or so it wasn’t unusual for men in my family to outlive 2 or 3 wives. Of the men who died before 40, a large percentage were sailors.
I also noticed a tendency of 2nd and 3rd wives to have fewer children and live longer themselves.
My greatgrandmother was born in 1855. She had 17 children of which 9 lived. I remember attending her birthday party in Monroe, MI (through which passes the River Raisin) in 1964, the year she died at the age of 109.
I discovered the same thing. My mom died in 2007 just 3 months shy of being 103. She has a cousin who is 106. My grandmother was in her 90’s and my great grandfather was in his 90’’s when they died. They worked hard all their lives and that had a lot to do with their ages.