Testosterone is a hormone produced primarily in the testes.
*If you have unusually low levels of testosterone, your doctor may prescribe a synthetic version of testosterone. You may be able to choose from testosterone injections, troches, gels or creams.
Some of the first signs that a man may be experiencing this change:
Along with the aging process: excessive stress, weight gain, and lack of exercise can further lower testosterone, which will impact stamina, drive and virility.