
Originally Posted by
Youthful55guy
It was a retrospective study and I think the LH and FSH data was extracted from the records simply to confirm that the TRT was effective. Here's the only discussion of gonadotropins outside of the abstract:
A negative correlation was observed between ΔHct and follow-up LH (ρ=−0.212, p=0.005) and FSH (ρ=-0.254, p=0.001), as would be expected with an intact hypothalamic-pituitary-gonadal axis.
I reread the Discussion and it was particularly insightful. This is not the first study implicate DHT in erythrocytosis. They cite 7 other studies also implicating DHT.
Understanding the role of DHT in erythrocytosis is of particular interest to me. Like a lot of guys, I "feel" a lot better with more and more T. I suspect this is due to faster recovery in from exercise. However, I know from experience that levels higher than about 120 mg/week (split E3D) is not sustainable because my hemoglobin level start exceeding the upper range of normal after a couple months, even with the maximum allowable frequency of blood donations. There's also the long-term negative effect of blood donations on ferritin levels and thyroid function to consider. If I could keep hemoglobin in check by preventing the rise in DHT by using finasteride, it may alleviate the need for blood donation and possibly allow me to increase my TRT dose to a higher sustainable dose without the need for blood donation. Of course, it mean I would not qualify for blood donation either, as finasteride is highly teratogenic to developing male fetuses and on the forbidden list for blood donation (requires a 4 week withdrawal period).
Lots of things to consider. Right now I'm in the middle of a 6-week 'enhanced' TRT trial (35 mg T-cyp/day) + finasteride (1 mg/day) + anastrozole (~0.07 mg/day). I plan to follow up with labs in at the conclusion of the 6-week trial to see where I'm at then go back to my normal TRT protocol for 4 weeks. Donate blood, and then repeat the experiment but adjust the finasteride and anastrozole doses based on the lab results. I plan on repeating this experimental cycle until I either reach a point where my DHT is in check or I've reached a maximum dose of 5 mg finasteride per day. At that point, I will probably need to adjust the T-dose down, but time will tell.