Testosterone is a hormone produced by the testicles and is
responsible for the proper development of male sexual
characteristics. Testosterone is also important for maintaining
muscle bulk, adequate levels of red blood cells, bone density,
sense of well-being, and sexual and reproductive function.
Inadequate testosterone production is not a common cause of
erectile dysfunction (ED). When ED does occur with decreased
testosterone production, testosterone replacement therapy may
improve the ED. What causes testosterone deficiency? As a man
ages, the amount of testosterone in his body gradually declines.
This natural decline starts after age 30 and continues
throughout life. The significance of this decline is
controversial and poorly understood. Among other potential
causes of testosterone deficiency are: - injury or infection to
the testicles - chemotherapy or radiation treatment for cancer -
genetic abnormalities such as Klinefelter’s Syndrome (extra x
chromosome) - hemochromatosis (too much iron in the body)