Testosterone is the hormone responsible for masculine growth and development in male, when this hormone is not produced enough the condition is known as Male hypogonadism. This condition may is from the birth of an individual or it may occur in the middle due to injuries or infections.
This condition comes out with infertility, decrease in muscle mass and bone mass, etc during adulthood. In Switzerland At baseline 68 patients (70%) had subnormal fT levels. In these, LH levels were low in 44%, normal in 47% and high in 9%.