Before i became hypogonadal i had an above average penis size and great libido/erections. Being a 23 year old guy i didn't have a single problem in the penis region. With that said I was also pretty small when flaccid but when erect i was a good bit above average. I've only ever had one good testicle all my life but it did me well until it got injuried and i ended up with low testosterone. A varicocele caused progressive testicular damage which resulted in my low testosterone. During the time when my testosterone level was dropping i noticed my penis was also shrunk up and really thin looking (like "out of gas"). I also noticed some strange "dots" (like bruises) appear on my glan's which were never their before (i showed this to the urologist). At this point i was taking any TRT and wasn't sure what was going on. By the time my levels were in the 450/500 range my penis looked alot smaller than normal. Erections were weak and not as powerful as before either. I am also pretty sure i noticed a slight reduction (maybe half an inch way) in size. Once i started on androgel everything bulked up again and my penis looked normal again but still loosing half an inch each way. Getting erection's was still tough but alot better than before. I am curious to know the relationship between testosterone and the penis? I am aware free testosterone has a role to play in flaccid size. I have heard that the penis can shrink if your testosterone level is low for a long time (maybe years?). I have heard their can be tissue loss with really low levels (below 500)? However at the other end of the spectrum i have heard about guy's with no testicles getting no shrinkage at all (and that's without TRT). Just looking for some information/experiences regarding this!