Testosterone is one of the most important compounds in the human body. This is because it is a male sex hormone that can stimulate the body to produce a number of secondary sexual characteristics. This includes hair growth in the face, groin, armpits and chest. Peak production is usually recorded at the age of around 21 years, but often declines at the age of 30 years. There are a number of changes that often take place when testosterone hormone levels decline. For starters, body fat usually starts to increase while muscle mass usually starts to decline. Sexual stamina and libido may also decline.
Through testosterone replacement therapy, doctors can help patients to restore their t-levels to normal levels. This means that sexual stamina, muscle mass and endurance will be restored. Only qualified medical practitioners should be allowed to administer the therapy.