My hair started thinning pre-T, probably connected to hypothyroidism. After starting T the hairloss sped up, which sucked since it followed a female hairloss pattern. I've been using minoxidil for a while to stall it. I've "finally" gotten a slightly receding hairline aswell, so now I'm more "meh, whatever" about it.
Also, I have two older brothers. One started losing his hair at 18, the other still has thick hair. Ah, genetics.