Humanaut wrote:
eric76 wrote:
Oddly enough, the maximum lifespan hasn't changed all that much in the last couple of thousand years.
That's not odd since it is a function of optimal conditions, but the
average lifespan has increased.
Much of that is because babies are far more likely to survive.
In the old days, people in big cities and along trade routes were more likely to die from a wide variety of diseases because they were exposed to more diseases. In the remote countryside away from trade routes, most people didn't travel very far at all (you could go your entire life without traveling more than five miles from home) and so they were less likely to be exposed to many diseases. As a result, significantly more of them lived longer. From what I've read elsewhere, if you lived far out in the country and survived your first year, your life expectancy was not much less than today while if you lived in a large city or along major trade routes, it was more like in the 30s or early 40s.