User blog comment:Deafro/Are Hunters Immortal?/@comment-186.188.98.58-20131208201945

Perhaps people in Remnant have longer livespans than real life humans due to the use of their aura. However, since Aura needs to be used to heal one's wounds, even at cellular level, and Aura can be depleted, it would be very impractical for a huntsman/huntress, or for any person to waste their Aura on being young.

The point is, that the use of Aura is meant to protect it's user, either when defending or attacking, to help him survive during a battle. Yes, it can heal the user from phisical harm, but we can't be sure it affects the aging process.

HSXI- May the Power protect you.