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Updated September 09, 2008

Definition: A naturally occurring androgen (male steroid hormone) produced in the testes in men and (in small amounts) by the ovaries and adrenal cortex in women. Testosterone plays a role in the development of male sexual characteristics, including muscle formation and hair patterns. It also plays a role in sexual desire. When it is deficient, it may be prescribed as a treatment for some sexual arousal disorders.
Pronunciation: tes-TAHS-tuh-rone
Also Known As: Male Hormones, Androgen Hormone
When Audrey noticed her libido falling, she asked her doctor whether she may need testosterone replacement.

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