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2. Free androgen index - Wikipedia

   en.wikipedia.org/wiki/Free_androgen_index

   Statistical analysis has shown FAI to be a poor predictor of bioavailable testosterone and of hypogonadism in men. [2] The Endocrine Society has taken a position against using the FAI to measure Free Testosterone in men: The FAI is often used as a surrogate for FT, and the FAI correlates well with FT in women but not men. Because T production ...

3. Late-onset hypogonadism - Wikipedia

   en.wikipedia.org/wiki/Late-onset_hypogonadism

   As of 2016, the International Society for the Study of the Aging Male defines late-onset hypogonadism as a series of symptoms in older adults related to testosterone deficiency that combines features of both primary and secondary hypogonadism; the European Male Aging Study (a prospective study of ~3000 men) [10] defined the condition by the presence of at least three sexual symptoms (e.g ...

4. Gynecomastia - Wikipedia

   en.wikipedia.org/wiki/Gynecomastia

   [7] [26] Receptors for prolactin and other hormones including insulin-like growth factor 1, insulin-like growth factor 2, luteinizing hormone, progesterone, and human chorionic gonadotropin have been found in male breast tissue, but the impact of these various hormones on gynecomastia development is not well understood.

5. Hypergonadotropic hypogonadism - Wikipedia

   en.wikipedia.org/wiki/Hypergonadotropic_hypogonadism

   Hypergonadotropic hypogonadism (HH), also known as primary or peripheral/gonadal hypogonadism or primary gonadal failure, is a condition which is characterized by hypogonadism which is due to an impaired response of the gonads to the gonadotropins, follicle-stimulating hormone (FSH) and luteinizing hormone (LH), and in turn a lack of sex steroid production. [1]

6. Hypogonadism - Wikipedia

   en.wikipedia.org/wiki/Hypogonadism

   Men with low serum testosterone levels should have other hormones checked, particularly luteinizing hormone to help determine why their testosterone levels are low and help choose the most appropriate treatment (most notably, testosterone is usually not appropriate for secondary or tertiary forms of male hypogonadism, in which the LH levels are ...

7. Testicular atrophy - Wikipedia

   en.wikipedia.org/wiki/Testicular_atrophy

   Testosterone is a hormone that is found primarily in a portion of the male reproductive system called the testes and is normally measured in nanograms per deciliter. Testosterone is in charge of the growth and production of many sexual attributes in males, including facial hair, pubic hair, penis size, vocal and muscle mass changes, regulation ...