>Could be cyborg parts and clean living. I haven't thought that hard
>about it.
>
>... Or I hadn't until you asked, anyway, hmm.

I don't think turian lifespans have been stated anywhere, have they? It could be they're not as long-lived as asari, but still kick around for a couple of hundred years.

Garrus is the sort of character it'd be a shame to let age out. (Not to the degree of a certain savvy Salarian scientist, mind you, but still.)