Medical Definition of Low testosteroneAbnormally low levels of the male sex hormone testosterone in the blood. Testosterone is produced by the test deca winstrol cycle and to a lesser extent by the adrenal glands. Testosterone encourages the development of male sexual characteristics at pubertystimulates the activity medical term for low testosterone the male secondary sex characteristics, drives the production of sperm, and is involved in regulation of muscle mass and sex drive. Testosterone levels are highly medical term for low testosterone by a complex glandular system. Abnormally low testosterone levels can occur due to a number of conditions affecting the glands that regulate and produce this hormone. Symptoms of low testosterone include decreased llow, impotence medical term for low testosterone erectile dysfunctionbreast enlargement, and a lowered sperm count. Low testosterone levels may be treated with hormone therapy.
Low testosterone | definition of Low testosterone by Medical dictionary
Male hypogonadism is a condition in which the body doesn't produce enough testosterone — the hormone that plays a key role in masculine growth and development during puberty — or has an impaired ability to produce sperm or both. You may be born with male hypogonadism, or it can develop later in life, often from injury or infection. The effects — and what you can do about them — depend on the cause and at what point in your life male hypogonadism occurs.
Some types of male hypogonadism can be treated with testosterone replacement therapy. The male reproductive system makes, stores and moves sperm. Fluid from the seminal vesicles and prostate gland combine with sperm to make semen. The penis ejaculates semen during sexual intercourse. Hypogonadism can begin during fetal development, before puberty or during adulthood. Signs and symptoms depend on when the condition develops.
If the body doesn't produce enough testosterone during fetal development, the result may be impaired growth of the external sex organs. Depending on when hypogonadism develops and how much testosterone is present, a child who is genetically male may be born with:. Male hypogonadism may delay puberty or cause incomplete or lack of normal development. In adult males, hypogonadism may alter certain masculine physical characteristics and impair normal reproductive function.
Signs and symptoms may include:. Hypogonadism can also cause mental and emotional changes. As testosterone decreases, some men may experience symptoms similar to those of menopause in women. See a doctor if you have any symptoms of male hypogonadism.
Establishing the cause of hypogonadism is an important first step to getting appropriate treatment. The pituitary gland and the hypothalamus are situated within the brain and control hormone production. Male hypogonadism means the testicles don't produce enough of the male sex hormone testosterone.
There are two basic types of hypogonadism:. Either type of hypogonadism may be caused by an inherited congenital trait or something that happens later in life acquired , such as an injury or an infection. At times, primary and secondary hypogonadism can occur together. In secondary hypogonadism, the testicles are normal but function improperly due to a problem with the pituitary or hypothalamus. A number of conditions can cause secondary hypogonadism, including:.
The rate at which testosterone declines varies greatly among men. As many as 30 percent of men older than 75 have a testosterone level that's below the normal range of testosterone in young men. Whether treatment is necessary remains a matter of debate.
Hypogonadism can be inherited. If any of these risk factors are in your family health history, tell your doctor. The complications of untreated hypogonadism differ depending on what age it first develops — during fetal development, puberty or adulthood. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. This content does not have an English version.
This content does not have an Arabic version. Overview Male hypogonadism is a condition in which the body doesn't produce enough testosterone — the hormone that plays a key role in masculine growth and development during puberty — or has an impaired ability to produce sperm or both. Male reproductive system The male reproductive system makes, stores and moves sperm.
Request an Appointment at Mayo Clinic. Pituitary gland and hypothalamus The pituitary gland and the hypothalamus are situated within the brain and control hormone production. Ferri's Clinical Advisor Clinical features and diagnosis of male hypogonadism. Khera M, et al. Mayo Foundation for Medical Education and Research; Testosterone treatment of male hypogonadism.
Overview of testosterone deficiency in older men. Melmed S, et al. Williams Textbook of Endocrinology. Dietary reference intakes for calcium and vitamin D. Tournaye H, et al. Concepts in diagnosis and therapy for male reproductive impairment. Dwyer AA, et al. European Journal of Endocrinology. Nippoldt TB expert opinion. Mayo Clinic, Rochester, Minn. Mayo Clinic Marketplace Check out these best-sellers and special offers on books and newsletters from Mayo Clinic.