Thanks for your input. Maybe I should put this in a different thread. But, if healthy testicular function is maintained through hCG, why wouldn't someone be able to discontinue TRT and then return to pre-TRT testosterone, LH, and FSH levels? There was a male birth control study that showed, after 3-6 months off, a few hundred Chinese men were able to return to normal sperm counts after 2.5 years of TRT which consisted of only 200mg of testosterone per week (no hcg, AI, or even PTC).
I've read that FSH is unnecessary for maintaining fertility because hCG can act like FSH to a small degree. Also, FSH is unnecessary to maintain healthy testicular function. Is this true? Is there science to support this idea, or have there been no studies on it yet?
I've read KSman say that hCG can raise intertestictular estrogen levels through intertestictular aromatization. I'm not expert in this field, like he is. But, my theory is that hCG contains prolactin, or fragments of other, similar, estrogen related peptides. hCG is just twice distilled urine after all... Do you think hCG itself could cause estrogen problems?
I'm not considering starting TRT until I'm at least 30. But, I'm interested in the topic, and maybe these question will be helpful to someone else.