Testosterone is a hormone produced in the male testes. During a boy's pubescent years (ages 9 to 14), there is an increase in production that leads to male secondary sexual characteristics such as a deeper voice, more muscle mass, facial hair growth and enlargement of the Adam's apple (among others). Some teenage boys experience these puberty changes at later ages than others. The timing of puberty is often genetically determined (through heredity), but other factors can play a role in delaying it, such as poor nutrition, physical trauma and certain diseases. Stimulating testosterone production naturally is possible in teen boys, although in rare cases hormone therapy may be needed to trigger and complete puberty.
Another approach for treating low testosteroneis to stimulate the body’s own capacity to make testosterone – to fortify the testicles. Clomiphene citrate, marketed in pill form as Clomid or Serophene, is a prescription medicine commonly used for female infertility. It works by stimulating a part of the brain (the pituitary gland) that controls production of two hormones key to reproductive health: follicle stimulating hormone (FSH) and luteinizing hormone (LH). Both hormones are also vital to men. FSH stimulates sperm production in the testicles, and LH stimulates testosterone production.