Therefore this AAS is somewhat deactivated in the skin, scalp, and prostate, and these tissues experience an effectively-lower androgen level than the rest of the body. Thus, it is the best choice for those particularly concerned with these things. Yet, it gives only about half the muscle-building results per milligram. It also appears less effective or entirely ineffective in activity on nerve cells, certainly on the nerve cells responsible for erectile function. Use of Deca as the sole AAS often results in complete inability to perform sexually.
Nandrolone is proven to be a progestin.
This fact is of clear importance in bodybuilding, because while moderate Deca-only use actually lowers estrogen levels as a consequence of reducing natural testosterone levels and thus allowing the aromatase enzyme less substrate to work with, Deca nonetheless can cause gyno in some individuals. Furthermore, just as progesterone will to a point increase sex drive in women, and then often decrease it as levels get too high, high levels of progestogenic steroids can kill sex drive in male bodybuilders, though there is a great deal of individual variability as to what is too much. Incidentally, this progestogenic activity also inhibits LH production, and contrary to common belief, even small amounts of Deca are quite inhibitory, approximately as much so as the same amount of testosterone. In any case, Cytadren , an aromatase inhibitor, has not been found effective in avoiding aromatization of nandrolone. Copyright 2001 Meso-Rx.