DragonBits
Well-Known Member
I have heard about men, that only inject testosterone for many years and lose their sex drive. I am told when that happens, you need to add in HCG. I believe that it may eventually be necessary for every man on testosterone to include HCG.
If you are secondary, then HCG should increase TT, E2, and probably DHT as well even while you are injecting testosterone. That alone may account for those differences. It should also make the low points between injections higher.
After 5 years I didn't notice any big decline in interest in sex, though I did have some testicular atrophy and zero sperm count. Size and sperm came back after about 5 months of stopping TRT, though TT declined back to pre-TRT levels. At that point I still had an interest in sex, it was diminished to once every two weeks.