By sterile you mean you'll shoot blanks and can't get a women pregnant right? Somebody please correct me if I'm wrong but I think that most if not all gear can make you shoot blanks while your on it. It's not permanent though.
I wasn't saying if you’re on gear you can be certain that you will shoot blanks. I didn't mean that. I should have clarified more. I was trying to say that there are circumstances where it can make you shoot blanks if on a cycle too long or real high dosages. This is just what I've read.