As far as I can tell, we're the same when we go home as we were when we got here. I was here for about nine months before I went back and then spent a year at home. ... Though I don't know if I could tell since the way my human morph ages is... weird... anyway. If it did change anything, maybe it shortened my lifespan at the tail end of things? It seems like something that would happen, even if I wasn't told about it until I was already dead.