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Testosterone is a male sex hormone that is important for sexual and reproductive development. The National Institutes of Health regards testosterone as the most important male hormone.Women also produce testosterone, but at lower levels than men.Testosterone belongs to a class of male hormones called androgens, which are sometimes called steroids or anabolic steroids.In men, testosterone is produced mainly in the testes, with a small amount made in the adrenal glands. The brain's hypothalamus and pituitary gland control testosterone production.he National Institutes of Health regards testosterone as the most important male hormone. Women also produce testosterone, but at lower levels than men. Testosterone belongs to a class of male hormones called androgens, which are sometimes called steroids or anabolic steroids.
In both men and women, testosterone is made in small amounts by the adrenal glands, and in women, by the ovaries. The pituitary gland controls the level of testosterone in the body. When the testosterone level is low, the pituitary gland releases a hormone called luteinizing hormone (LH) . This hormone tells the testicles to make more testosterone. Before puberty, the testosterone level in boys is normally low.