Human testosterone has a breast growth inhibitor. We humans are about the only one of the mammals that show our boobies when we are not suckling, including the great apes. When the body builders use anabolic steroids, some of those are from animal sources, the rest that are synthetics that mimic the human T molecule to some extent, but not on others. This fools the pituitary gland to shut off your own T when these androsols are used.
The results after long usage:
Gynecomastia (breast growth).
Decreased or no libido when off of these drugs.
Permanent sterility.
Some cases of "roid rage". etc.
In our case, it depends on how much T is in our systems, results will vary with the person. Remember, premenopausal ciswomen have some T in them to regulate their own reproductive system, keep their energy and libido up. This has been proven in menopausal women given the very tiny amounts of T.
Joelene