The goal of hormone replacement is to improve quality of life, sense of well-being, sexual function, muscle strength, and bone mineral density.
Replacement of the hormone testosterone aims to restore levels in men diagnosed with low testosterone caused by problems in the testicles (primary hypogonadism).
Pituitary hormones may be replaced if low levels are caused by a problem in the pituitary gland (secondary hypogonadism). These hormones can stimulate genital development in boys. They can increase sperm production and restore fertility in men.