Before I even start, please please don't respond about how you wouldn't have lived very long at all in your birth gender, I understand, but I'm looking for a medical answer.
I'm 22 and just starting HRT, and it occurred to me that (ignoring the reality that I literally could not live the rest of my life as a male) I'm probably shaving a few years off my life span. I realize it's unlikely, but does anyone know of any studies about how much HRT reduces life span? For me this is a purely academic question, I can't see any answer making me change my mind about HRT, but I'm curious and I figured I'd ask.