I mean, it's worth addressing that this is a universe where prayer has, to a degree for the commoners, real and physical positive effects. Like, sufficient prayer at an altar for any of the Nine cures diseases, and even if that's because you're the hero and stuff will often work for you more than others (ie runestones in Oblivion) there is still the fact that magical healing and curing of disease exists, which outside of some isolated or backwards/Nordic communities is generally accessible.
What I'm trying to get at is the lifespan is at worst closer to what it was like in the Roman Empire period and probably significantly better for the "human" races.
Elves are a whole discussion.