When testosterone injection is used in male infertility treatment, it produces sperm count to 0 level in most of the patients. This is due to negative feedback loop in the testicle. This is noted in Ganong's Text book of Physiology even in 1980 edition. Fortunately, it may get reverted once the drug is stopped.
It is pertinent that all doctors should be informed about this important info in endocrinology and infertility. Even now doctors are using is a point to be objected to and to be highlighted in all fora of medical education. This will save the shame on the part of the doctor since patients are net savvy and may become medico legal.
