Symptoms and Signs of Low Testosterone (Low-T)

Medical Author: John P. Cunha, DO, FACOEP
Medically Reviewed on 3/11/2019

Doctor's Notes on Low Testosterone (Low-T)

Low testosterone (low-T) describes an abnormal level of the hormone testosterone, a steroid hormone produced in the adrenal glands of both sexes, and in the testes of males and the ovaries of females. Low testosterone is considered to be below 300 ng/dl in male patients, although some doctors suggest the normal range is 270 – 1070 ng/dl. Other terms for low-T include hypogonadism (primary, secondary and tertiary, depending on the cause of low-T) and testosterone deficiency (TD).

Symptoms of low testosterone (low-T) include erectile dysfunction, Reduced sex drive, reduced or absent orgasm, reduced or absent spontaneous erections; loss or reduction of pubic, armpit, or facial hair; depression, size reduction of testes, breast discomfort or enlargement, hot flashes or sweating, reduction in strength, sleep disturbances, or memory reduction. Other symptoms of low testosterone (low-T) that may be seen in examination or tests done by a doctor include anemia, osteoporosis, reduced or absent sperm production, infertility, or increased body fat (body mass index). Many of these same symptoms may be see in women with low-T except for the male-specific symptoms.

Low Testosterone (Low T) : Test Your IQ of Men's Conditions Quiz

Low Testosterone Quiz

Testosterone is a chemical found only in men.

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Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.