joecool722 (imported) wrote: Wed Jul 24, 2013 7:11 pm
Yeah, with my current low level of T, my libido is actually lower than I prefer. But I like being able to play with it. The idea of being able to get on T and have it kill my bodies ability to produce even the small amount of T that I now have and then at some point in the future if I want to try to see what it would be like to be chemically castrated, it would (in theory) be as simple as stopping my T dosage.
I've been on TRT (via MD-prescribed daily rub-on compounding pharmacy-made crème) continuously for 3-1/2 years, following a crashing to 210 of my natural T production due to radiation treatment 5-1/2 years ago for prostate cancer. I now have T levels at least double my pre-radiation level of 360-410, and enjoy the pep, mental sharpness, and largely restored libido. This exogenous (external) T source continuously satisfies my hypothalamus's T-detection and regulation "setting" (in the manner of an air conditioner thermostat's setting or a car’s voltage regulator) such that it no longer emits the GnRH hormone that would stimulate my testicles into T-making activity.
An Explanation Per Kristoff's sticky Castration Primer post of 12-27-2006 in the Eunuch Central Forum:
"Production of testosterone is controlled by the release of luteinizing hormone (LH) from the anterior lobe of the pituitary gland, which is in turn controlled by the release of GnRH (Gonadotropin Releasing Hormone) from the hypothalamus. LH is also called interstitial cell stimulating hormone (ICSH). Thus: Hypothalamus --> GnRH --> Pituitary --> LH --> Testes --> Testosterone.
"The level of testosterone is under negative feedback, that is, a rising level of testosterone suppresses the release of GnRH from the hypothalamus."
Accordingly, my testicles have not been getting any LH for 3-1/2 years and presumably have not been producing any T during that time. They have gradually shrunk to about 75% of their former dimensions, meaning to about 43% of their former volume. I have noticed that they hang from shortened cords so that they don't rest on the bottom of my scrotum, which in turn now hangs slack in its underneath part as well as not being filled out along its sides.
Subjectively, I enjoy every effect of my TRT-supplied high T level compared to my natural level and especially compared to my low, post-radiation level. And I’m indifferent to my testicular shrinkage or whether I even have testicles any more, at age 70.
Because my PSA results have risen over the last year to the point that suggests prostate cancer is returning, I may soon have to discontinue TRT and then maybe undergo a process to eliminate T from my system thereafter, permanently or in lengthy intervals separated by spells of having normal T levels until PSA again rises. Thus I have the same question posed: what will my testicles do if I stop long-term TRT?
I asked my hormone-prescribing doctor and he said without hesitation that my testicles will come out of hibernation and resume T production in accordance with what my hypothalamus wants of them. How fast and how well they would perform he didn’t get into, but it matters if I have to drop to and maintain a castrate level of T in the future to stall prostate cancer. Any returning T production would be too much. Info on this Board mostly says that the time I’ve been on TRT is too long for my testicles to return to productivity. Other info from the bodybuilding world, where T-like steroids are taken in much shorter cycles than a full year, seem to agree that taking certain drugs is necessary to stimulate prompt return of testicular output when the T-suppressive steroids are about to be stopped. HGT and Nandrolone or Clomid were mentioned, I think. Thus it’s not clear what the answer is. Perhaps I’ll be finding out in real life for myself in the coming months.