Beverly Hills Male Medical Center | Los Angeles, California.


What is testosterone?

Testosterone a steroid hormone found in mammals, birds, reptiles and other vertebrates. It is primarily secreted in the testes of males and ovaries of females. In men, testosterone plays a key role in normal development and growth of the male sex organs as well as maintenance of secondary sexual characteristics such as muscle, bone mass and hair growth. In men testosterone is responsible for sperm production, general well being and mood, libido and sex drive and muscle strength. Decrease levels on the other hand can cause:

  • Changes in sexual function. This may include reduced sexual desire, fewer spontaneous erections — such as during sleep — and infertility
  • Emotional changes. Low testosterone may contribute to a decrease in motivation or self-confidence. You may feel sad or depressed, or have trouble concentrating or remembering things.
  • Physical changes. Various physical changes are possible, including increased body fat, reduced muscle bulk and strength, and decreased bone density. Swollen or tender breasts (gynecomastia) and hair loss are possible. You may experience hot flashes and have less energy than you used to.
  • Increased body fat as the result of hormonal imbalance and increase effect of estrogen and its production

How to check testosterone levels?

Testosterone production could be checked by a simple blood test which determines the hormone level in the blood stream. In the United States, male total testosterone levels below 300 ng/dL from a morning serum sample are generally considered low.

What is hormone replacement therapy?

Primary use of testosterone is for the treatment of males who have too little or no natural endogenous testosterone production Testosterone levels decline gradually after age 30 in human beings. Replacement therapy can take the form of injectable depots, transdermal patches and gels, subcutaneous pellets, and oral therapy.