For instance, testosterone therapy often carries risks. Supplementing the hormone signals the body to shut down production of its own supply, which can shrink the testicles and suppress sperm. Some researchers have even studied testosterone for its contraceptive effects.
Moreover, because testosterone revs up oil glands and hair follicles – and partly converts them to estrogen – it can also bring about acne, balding and even some breast tissue growth.
You gotta love ironic consequences.
It turns out that all you need to do to become stronger and more "manly" is to exercise, sleep well, and maintain a nutritious diet.
Men who try to shortcut all that by taking extra T may find themselves enhancing the very physical traits that they're seeking to avoid.