Talk:Kishou Arima/@comment-73.227.203.2-20160916234510/@comment-10733658-20160917110645

^ True, true. So I suppose it could be said that once their bodies reach maturity, things kind of start declining. I'm still a little confused about what exactly this involves, since other than his white hair and Glaucoma, Arima doesn't have any sort of markers of the aging process.

I mean, from his statement, we can presume that he was terminally ill in some capacity. But it isn't clear exactly what would have killed him, had he died a natural death.

If I had to venture a guess, maybe it's related to their RC cells. While they seem to lack functioning kagune, half-humans register on RC scanners as ghouls. So their levels have to be elevated beyond those of humans, which could factor in the reason for their enhanced physical traits.

Maybe the lack of regeneration means after a certain point, the RC cells that grant them their abilities causes some sort of breakdown or rejection?