Yes the gentleman, but not all gentlemen, showed increased prolactin. There can be local increases in hormone levels not observed in blood levels. Hormones can work that way. It's called paracrine signaling. Again your basic scientific knowledge is lacking. Secondly, I do not see that you understand your own use of the term expression. You have not clarified your use. Therefore you have no footing in your arguments if your goal is to be intellectually honest rather than try to bamboozle your friends on this board. I have provided a scientifically sound explanation for nandrolone induced impotence. You haven't offered an alternative explanation. You only offer insult. Where is your alternative explanation? Apparently you have none. You also do not understand how breast tissue develops. It is not simply induced by estrogen. It requires the presence of a series of hormones including estrogens, progesterones and prolactin produced in a specific temporal sequence and duration.
You do not even understand glynecomastia's causes. From the Textbook Endocrinology: an integrated approach chapter 6,
Causes:
Common (~>95%)
- Age related (non-pathological):
Neonatal - circulating estrogen action
Pubertal - breast aromatase activity converting testosterone to estradiol (usually disappears after 2 years)
Old age - decreased circulating androgen concentrations
- Drugs including:
Estrogens or estrogen precursors - e.g. testosterone
Androgen antagonists - e.g. spironolactone, cime-tidine, marijuana, progestagens
Prolactin stimulating agents - e.g. metoclopramide, sulpiride, phenothiazines, tricyclic antidepressants
From the same text chapter 6:
Gynecomastia refers to growth of mammary glands in males. This may result from changes in sex steroid production during sexual development or senescence, drugs that affect endogenous hormone production or action and genetic disorders linked with gonadal dysgenesis. Excess prolactin can also cause gynecomastia but most common is pseudo-gynecomastia due to the deposition of fat in the pectoral area. Causes of and treatment for gynecomastia are summarized in
Boxes 6.27 and
6.28.
Arguing with you is pointless because you have no understanding of biology let alone endocrinology and physiology.
Arguing with you is pointless because you do not have a scientific basis to argue from. I suggest you put down the steroid guru articles and read a few scientific text books. Your bluster is just that. You offer no scientifically cogent alternative arguments to support your bluster.