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Yea great point mate, because your last comment imparts another important factor!. However any AAS which aromatizes may and usually does increase E-2, yet the degree of that change AND the physiologic response is highly individualistic.
Nonetheless although there is no doubt some mates will develop Gynecomastia changes with minimal perturbations of their E-2 level, others seemingly never manifest ANY breast alterations.
There is no doubt ALL mates would develop some degree of Gyneco IF E-2 was driven high enough or if a TT:E-2 reversal transpired (E-2 > TT), because the latter is the therapeutic goal for TRANSSEXUALS who "want breasts".
Indeed it shouldn't be to surprising, the absolute amount of E-2 required is also quite variable and appears to be dependent upon the quantity of E-2 dependent breast tissue from the outset. (I've no doubt the "non-respnders" to traditional E-2 dosing would also be resistant to cycling standard AAS dosages.)
Ok so what about lactation in these he/she's?
Lactation is a very complex process that involves the timely interaction of THREE primary hormones. Included are E-2 Progesterone and Prolactin.
A brief review may aid some of the naysayers whom cling the their antiquated bro lore.
First E-2 must be elevated VERY ELEVATED to ensure mammary gland and duct devel
Suffice it to say at close to TEN "hormones" are involved in pregnancy induced lactation. And although "lactation" is achievable in the majority of male/female transsexuals the quantity (a daily BCP or conjugated estrogens such as Premarin) and duration (1-2 YEARS).
Obviously the dosage required FAR exceeds any cycle period. Moreover many patients are placed on androgen suppressive therapy to further ensure an TT:E-2 reversal and or a E-2 level ranging between 100-200 ng/ml.
While studies in transexuals have supported the notion markedly elevated E-2 can in fact increase SERUM Prolactin, the prerequisites are in no way achievable thru AAS cycling, unless perhaps that UGL has pulled the dirty deed and substituted estrogens for androgens, lol!
Another point worth emphasizing, galactorrhea will not occur even if the Prolactin level is increased CONSIDERABLY unless the breast tissue has been "primed by E-2" with an abrupt decline of the latter, shortly thereafter. This rapid fall of E-2 is responsible for the surge of prolactin in pregnant females, and classically follows "suckling" on behalf of the newborn.
This negative feedback loop is important, no critical, for the development of galactorrhea/lactation!
THE POINT?
It matters NOT what the prolactin level is because in the absence of an INCREASED E-2 clinically relevant breast alterations simply DO NOT OCCUR. So once again, treat the cause of that "increased Prolactin level", as rare as it is IN CYCLISTS, by either lowering E-2 with an AI, or by "blocking" the receptors responsible for it's physiologic effects using a SERM.
This study emphasizes a few salient points IMO
Best
jim