from my understating,
Masteron blunts estrogen sensitivity via the progestin loop. progestins sensitize your estrogen receptors to estrogen. this is why you can get
tren gyno even though it doesn't convert to estrogen , its because tren as a progestin will act on progestin receptors and make you hyper sensitize to the low amounts of estrogen you do have.. Masteron simply blunts this process keeping you from becoming hyper sensitive to estrogen even in the presence of progestins (which is why it works great being ran with 19 nor progestins like tren and
deca ).
also, mast is fairly
androgenic (though on paper it isn't rated that high) . both directly and indirectly. its directly androgenic in that it will bind to androgen receptors and relay androgenic properties to cells, and its indirectly androgenic in that it will lower SHBG which will then free up a lot more DHT into the blood stream.
elevated androgen levels in the body will counter the "feminizing" effects that estrogen can have , even if your estrogen levels are high.
which is why its also an old school approach to run
Halotestin (the most androgenic AAS out there) to counter gyno symptoms.
androgens have a way of countering/offsetting negative estrogen effects.
so no Mast is not working like an AI at all or killing your estrogen levels. its working though much different pathways and actually working much better and healthier then an AI , imo .
having high estrogen levels is actually a good thing on cycle . the problem with high estrogen only is a problem if your androgen levels are super low. with both elevated estrogen and elevated androgen levels there becomes a synergy between the two and you will make better gains..
running Mast , I recommend 100mg EOD for a general cycle (much higher if in contest prep).
interesting side note - just like progesterone will sensitize estrogen receptors to estrogen, estrogen itself will sensitize androgen receptors to androgens (which is why crushing estrogen going into a cycle is a bad idea and going to limit the success of your cycle and the AAS having effect on receptors)
Last edited by GearHeaded; 11-01-2019 at 05:54 PM.