Society mostly.

There is a series of 'cloister studies', i.e. following the life of nuns and monks. The interesting part here is that, not only do nuns and monks have a generally very healthy lifestyle (some labor, but not too hard, quality food, no dangerous activities etc.), but also males and females pretty much live the same life. The result is that monks have a significantly higher life expectancy than men in general, but it is still 1-2 years shorter than nuns.