Quote from: ifonlyican14 on June 10, 2010, 12:01:13 PM
how am i supposed to be sterile and my body still produces t
i think being sterile is result from t lowering down
right 
?
It's because sperm and T producing cells come from two different linages that are effected differently by HRT
Every non-cancerous cell in the body needs a number of growth factors in order to live. Without these factors coming from somewhere else in the body the cell will die.
Leydig Cells are the Cells that produce T There population number is isn't largely effected by HRT they maybe killed off somwhat and there function is inhibited but the cells survive in the Testis.
Sertoli Cells need Testosterone normally sourced from the Leydig cells, without T they begin to die and are not replaced. these cells are critical for the Spermatogonium without them the sperms produced will be of poor quality immature, Genetically damaged, malformed, ect ect ect
Depending on how long you were exposed to HRT will influence how many Sertoli cells and Spermatogonium were lost because after a certain length of time there number is just too far gone to be replaced. When this happens you will become Azoospermic permanently. This time limit is generally accepted to be about 6 months.
After a year Your body may produce inhibited levels of T but can no longer can it produce useful sperm.
