similar story for me (I was on TRT before being diagnosed with a Gleason of 9 and a PSA of 27) but I had 26 month of Lupron and 39 Proton treatments. My oncologist was also only concerned about the PSA results- he said that is the only thing that needs to be monitored because that result is associated with cancer. The Lupron effect on my muscles, strength, weight and stamina is/was miserable. I used to routinely ride 100 mile group bike rides here in the mountains of Asheville. (I am getting back in shape with an e-bike). These onc docs don't have a holistic approach and are only focused on the cancer outcome. I have to request testosterone levels when I get my PSA. The T level had been <10 now it is at 22 and I will be requesting to go back on TRT. Current literature says there is no problem with TRT post prostate Ca therapy.