Male hypogonadism, also known as testosterone deficiency, describes when the testes are unable to produce the male sex hormone testosterone, sperm, or both. It can be due to a testicular disorder or ...

Different categories of late-onset hypogonadism can be distinguished by hormone measurements, risk factors and associated symptoms, new data of a cross-sectional survey reveal. In men, circulating ...

Hypogonadism also known as gonad deficiency is a condition with reduced or absence of sex hormone secretion by the sex glands. Sex glands also known as gonads are the testes in males and ovaries in ...

This article was reviewed by Peter J. Stahl, MD. The medical term for testosterone deficiency that causes symptoms is male hypogonadism. Testosterone is one of the most important hormones for men. If ...