| Testosterone is a hormone produced
by the testes. During adolescence, testosterone is responsible
for the normal development of male physical attributes such
as the male sex organs, body hair, and bone and muscle. In
adult men, normal levels of testosterone contribute to bone
and muscle strength, sexual function, libido, and certain
behaviors.
As many as 5 MILLION men in the United States may have
a testosterone deficiency, yet only a small fraction are currently
treated with testosterone replacement therapy. |