[Mkguild] Life Expectancy in MK universe

[Pontos]

I have a doubt about this subject. Knowing that MK is a medieval based 
setting, what is the life expectancy for the inhabitants of the world?.
Around the 9th century, reaching fifty was something unusual as far as i 
know, so how does that translates into the MK universe?. There are 
differences like the existence of magic though (which can in a way 
replace modern medicine, the reason why now we can live more than eighty 
years).
Characters like George, who are supposed to be on their fifties, don't 
seem to be in a bad physical shape (morphs or not).

There is also the thing with the AR, who don't actually age. 
Theoretically that would be the closest thing to immortality (unless 
someone comes and cut their heads off :P), but since it was stated that 
they will die when they are supposed to, that means that things like 
"fate" are proven and/or accepted in MK, right?. (in a world with 
prophecies it's not too hard to believe).
Just that.

Pontos