Talk:Half-human/@comment-93.150.160.36-20160704104309/@comment-10733658-20160704111854

Well, ROS is the result of out-of-control cell growth which creates tumors and other problems. In the case of the Garden kids, if they have a higher RC level, the cells aren't developing into tumors or anything like that. It's clearly still at a level that is manageable, with cells forming and dying at a stable rate.

Perhaps the higher RC level without a kakuhou is the reason for their limited lifespan, since it seems like the issue isn't aging so much as their internal organs are under too much stress? None of them look old, but their bodies develop the kinds of diseases that old age brings....which are typically developed as a result of the systems in the body becoming too stressed to continue working correctly.

Glaucoma, for example, occurs because of pressure on the optic nerve. As a person ages, the pressure builds and starts to restrict vision until the nerve is completely shut down and blindness occurs.

Stuff like RC pathways occur from the kakuhou responding to stress in the body, and repairing the damage. It makes them stronger, and also makes the great feats ghouls can perform possible. But hybrids like Arima don't have the ability to heal, so the increased strain just wears them down.