gjohnson5 said:
Uuum no.
COntrolling estrogen will have no effect on prolactin or progesterone levels.
Completely different hormones and completely different receptors in the body
No you are wrong.
Estrogen is a main initiator of Gyno and it must be present for it to occur. There is no distinction in research between "prolactin induced" gyno, and "estrogen induced" gyno..
progestins work via the PR. But their action via the PR does not cause gyno in any direct fashion. Progestins seems to be rather asexual in their characteristics. Progestins can aggravate estrogen related gyno, the current theory being an upgrading effect on the ER.
progesterone can only cause or aggravate gyno in the presence of circulating estrogen.
there is no evidence whatsoever of any type of progestin ever causing gyno in an environment devoid of estrogen.
There also appears to be no direct mechanism by which this is possible.
just to add..
"Plasma progesterone was raised in 36 of 50 (72%) men with liver disease compared with 20 healthy male control subjects. Plasma progesterone was significantly higher in men with non-alcoholic cirrhosis with gynaecomastia than those without, but no similar relationship was found in men with alcoholic fatty change and alcoholic cirrhosis. Hyperprolactinaemia was found in 14% of men with liver disease but levels were unrelated to the presence of gynaecomastia.. Increased circulating levels of progesterone and prolactin alone do not explain the development of gynaecomastia in patients with liver disease, but progesterone may be an additional factor acting in association with the known disturbances of other sex steroids. (1)
Progesterone enhances estrogen's stimulation of mammary gland growth, and our findings suggest that progesterone may play a role in the gynecomastia that occurs in men with hyperthyroidism. (2)
progesterone/progestins themselves are not capable of causing gyno (study 1), but enhance the action of estrogen, which is typically elevated in hyperthyroidism (study 2).
"True gynecomastia is a condition in which there is an enlargement of the male breast due to an increase in ductal tissue and periductal stroma.[13]"
http://www.medscape.com/viewarticle...LN3SJ1SStuTa53D|-3360746919023192434/184161393/6/7001/7001/7002/7002/7001/-1
Estrogen receptor knockout mice manifest significantly impaired ductal development, implying that estrogen is key to ductal development, and by definition (see phrase in quotes above) gynecomastia.
(1) Gut. 1982 Apr;23(4):276-9.
Progesterone, prolactin, and gynaecomastia in men with liver disease.
Farthing MJ, Green JR, Edwards CR, Dawson AM.
(2) J Clin Endocrinol Metab. 1988 Jan;66(1):230-2.
High serum progesterone in hyperthyroid men with Graves' disease.
Nomura K, Suzuki H, Saji M, Horiba N, Ujihara M, Tsushima T, Demura H, Shizume K.