This has been a good thread. My SHBG has steadily declined over the years since I began TRT. And I have not been able to make much sense of which protocol/injection frequency works best for me. It seems to be a moving target...and I've tried a lot of different things. And my results do not always match prevailing wisdom.
One thing that works in my favor when evaluating a protocol is that unlike some guys who went on TRT to "feel good" (which is a totally valid reason, however very subjective), I went on TRT for one specific reason - erectile function. It has been effective in this regard, and that is the primary metric that I use for myself to determine whether or not TRT is working. Although there are still variations in EQ on any protocol (and among natural men with no ED issues), it is a relatively objective metric.
As I enter my 5th year on TRT (and with a shut down HPTA) I sometimes worry about what the future may bring. I know that for me, relatively high levels help with symptom resolution. But what is the trade off?
I've never truly tried a low dose daily protocol, such as 10mg/day. 12 weeks seems like such a long time lol... I've used "lower" doses, but they still have some of my numbers out of range/out of balance and are possible unhealthy long-term and ineffective. When my levels are higher, TRT is at least effective, though I suspect still possibly unhealthy long-term.
Part of this post is just sharing a few random thoughts and experiences, but one question I have for more knowledgeable members would be:
We can assume that HPTA is shut down with almost any dose of exogenous injectable testosterone. However, is it shut down "harder" when guys are running higher levels? And if so, would running these higher levels be more likely to cause long-term issues associated with HPTA inactivity than the more "normal" levels one might achieve with the 10mg/day protocol?
I've read about a lot of guys that say they feel way better on the 10mg/day protocol. Happier, healthier, more normal. And I sometimes wonder if they feel better because of a "softer" HPTA shutdown, or if such a concept is even worth considering.
*Note that at all levels, my health markers are all good on lab work. I am not referring to those issues when questioning the long-term risk of TRT. It is the difficult to measure effects of the HPTA shutdown that I'm curious about.