Early on in my game I had villagers live to be in their nineties but now they seem to be dying in their early seventies. I have all levels of medicine, have made the special stews, etc. My villagers are healthy and then next thing I know they are dying off old age. Almost all of them have been very close to getting their third master level, but die before reaching it so they are not becoming esteemed elders. I did get nine totems early on, but only a couple in the last 15 people who have died.
Carole