User blog comment:Deafro/Are Hunters Immortal?/@comment-3146930-20131209184211

It really depends on how Aura is able to heal people. It may be that Aura just accelerates a cell's natural response to injury. If that were true, the body would go through all the regular stages of healing, just at a faster rate. Aura also only seems to activate when a person is in trouble or when the person is conscienceless using it. Maybe if someone like Ren just sat down one day and focused on healing 24/7, he could live forever; but others would probably just live an average to above-average lifetime.