Well, when I was in highschool, I was 5'9 3/4" tall, which I always just rounded up to 5'10". Prior to HRT, I measured at 5'9 1/2". Well, now I'm 5'9". I had heard about losing height due to HRT and I thought that was cool. You also lose height due to age as well. I know my dad has lost an inch from what he used to be. So I think it's really a combination of the 2, but the transsexual seems to lose the height much more quickly.
Melissa