average lifespan of the elite roman class?

[alexanderthegreater]

One of the assumptions that are being made here is that lower class people had a lower life expectancy. Thats not necessarily true though, being richer doesnt make you healthier. Better sanitation is only needed if you live in a dense enviroment like a city. Imagine tribesmen living from farming and some hunting, having acces to undiluted water sources, etc. Some of the more "primitive people" may actually have a healthier life. The Hadza, a hunter-gatherer people in Tanzania, are a modern example. The live in a lifestyle older than 10,000 years but regularly get older than 60, 70.
Death from childbirth and disease have more to do with the age of the mother and the enviroment (Filthy stinky cities like Rome) than wealth or availability of sanitation and medication. Didn't greek and roman girls got married of young? that most have severely increased childbirth, the healthiest age for a woman to deliver is 25 (read that somewhere not sure).