Reply #3: I think most cats end up

[KT2000]

with that illness. The vet was explaining to me that from the moment of birth, kidneys lose function because they do not regenerate after injury. As we all age, the kidneys still have to do the work of fully functioning kidneys even when they are not.

I used to think that cats were especially prone to kidney failure but now I think that they live so much longer and with fewer illnesses as romm-mates and family members with humans, that they have much longer lives.
I have been through this with a few cats and it made me feel better anyway.