I was on TRT for 10 years. Then I met an amazing woman, we wanted to start a family. Fertility clinic confirmed 0 sperm production. 6 months later she, she fell pregnant.

your body does stop making its own but there is no clear answer as to whether or not your body loses the ability to restart its own endogenous production. thats how new and also ignored/understudied testosterone hrt is… if you wait a fee years there might be new information or biomarkers that can help answer this question.

there are other things you can do to preserve your bodies natural T production. there are medications that induce it but its not been studied for long term use. there is also another hormone you can take called HCG that will cause your body to continue making test but its difficult to use.

the biggest benefit was to my sleep and this is true of pretty much everyone who takes it. i was able to have very deep, restful and unbroken sleep. the best sleep of my life. normally i can barely sleep and wake up in the night and do not feel rested. ive been like that since my 20s and nothing touches it besides testosterone. other benefits include much better mood, a tendency to be much more open and likable, tons of energy and motivation behind everything i do and of course being much stronger is also nice. cardiovascular performance, the ability to do cardio heavy tasks and not get winded, massively increased. i loved it. but it made me less calculated and thoughtful which is important for my job so i decided to stop. i will almost certainly start again in the future.

even after stopping i noticed that there seems to be a lot more pressure on my heels when im standing. i think it has a positive effect on my default sympathetic tone or something like that. drawbacks are sleep apnea, hair loss and testicle shrinkage