A person with hypogonadism does not produce enough sex hormones or is not capable of responding to them adequately. The development and function of reproductive organs and other sexual characteristics are influenced by sex hormones, such as testosterone and estrogen. In addition to affecting males and females, hypogonadism also has a wide range of symptoms and consequences, depending on age, gender, and severity.
Generally, hypogonadism is classified into two types: primary and secondary hypogonadism. Primary hypogonadism occurs when the problem originates in the testes or ovaries, which produce sex hormones. When the problem originates in the hypothalamus or pituitary gland, the brain's glands that control sex hormone production, secondary hypogonadism occurs.
Some of the possible causes of primary hypogonadism include:
Genetic disorders, such as Klinefelter syndrome, Turner syndrome, or Swyer syndrome
Autoimmune disorders, such as Addison’s disease or polyglandular autoimmune syndrome
Infections, such as mumps, tuberculosis, or HIV
Injury, surgery, or radiation to the testes or ovaries
Chemotherapy or other drugs that affect the function of the testes or ovaries
Aging, which can lead to a natural decline in sex hormone levels
Some of the possible causes of secondary hypogonadism include:
Genetic disorders, such as Kallmann syndrome or Prader-Willi syndrome
Tumors or cysts in the hypothalamus or pituitary gland
Infections, such as meningitis, syphilis, or encephalitis
Injury, surgery, or radiation to the hypothalamus or pituitary gland
Medications that interfere with the secretion or action of sex hormones, such as opioids, steroids, or antipsychotics
Obesity, diabetes, or other metabolic disorders that affect the function of the hypothalamus or pituitary gland
Stress, malnutrition, or excessive exercise that suppress the production of sex hormones
The symptoms of hypogonadism depend on the age, sex, and severity of the condition. Some of the common symptoms include:
Delayed or absent puberty, which can result in a lack of growth, development, or maturation of the sexual characteristics, such as breasts, genitals, body hair, or voice
Infertility, which can result from a low or absent production of sperm or eggs
Erectile dysfunction, which can result from a low or absent production of testosterone or a reduced response to it
Low libido, which can result from a low or absent production of sex hormones or a reduced response to them
Hot flashes, which can result from a sudden drop in estrogen levels
Vaginal dryness, which can result from a low or absent production of estrogen or a reduced response to it
Osteoporosis, which can result from a low or absent production of sex hormones or a reduced response to them, leading to a loss of bone density and strength
Muscle loss or weakness, which can result from a low or absent production of testosterone or a reduced response to it, leading to a loss of muscle mass and function
Fatigue, depression, or mood swings, which can result from a low or absent production of sex hormones or a reduced response to them, affecting the energy levels and mental health
Medical history, physical examination, and laboratory tests are used to diagnose hypogonadism. In addition to identifying the possible causes and symptoms of hypogonadism, a medical history and physical examination can also indicate whether there are any other medical conditions that may affect sex hormone levels. There are several laboratory tests that can measure sex hormone levels and other hormone levels, including:
Testosterone, which is the main male sex hormone that is produced by the testes and affects the development and function of the male sexual characteristics
Estrogen, which is the main female sex hormone that is produced by the ovaries and affects the development and function of the female sexual characteristics
Follicle-stimulating hormone (FSH), which is a hormone that is produced by the pituitary gland and stimulates the production of sperm in males and eggs in females
Luteinizing hormone (LH), which is a hormone that is produced by the pituitary gland and stimulates the production of testosterone in males and estrogen in females
Prolactin, which is a hormone that is produced by the pituitary gland and stimulates the production of breast milk in females and inhibits the production of sex hormones in both sexes
Depending on whether the hypogonadism is primary or secondary, and how severe it is, these hormone levels can be determined. Having low levels of testosterone or estrogen coupled with high levels of FSH or LH indicates primary hypogonadism, whereas having low levels of testosterone or estrogen coupled with low or normal levels of FSH or LH indicates secondary hypogonadism.
Other tests that may be done to confirm or rule out the diagnosis of hypogonadism include:
Karyotype, which is a test that examines the chromosomes and can detect any genetic abnormalities that may cause hypogonadism
Semen analysis, which is a test that evaluates the quantity and quality of the sperm and can detect any problems with fertility
Pelvic ultrasound, which is a test that uses sound waves to create images of the ovaries and can detect any problems with the structure or function of the ovaries
Bone density scan, which is a test that measures the density and strength of the bones and can detect any signs of osteoporosis
The treatment of hypogonadism depends on the cause, type, and severity of the condition, as well as the patient's age, gender, and goals. This treatment is intended to restore the normal levels of sex hormones and to prevent or treat any complications caused by hypogonadism. The most common types include:
In hormone replacement therapy (HRT), synthetic or natural sex hormones are used to replace or supplement the body's deficient or absent hormones. There are a variety of ways in which HRT is administered, including pills, patches, gels, injections, and implants. Patients with hypogonadism may benefit from HRT to relieve symptoms and improve their quality of life, as well as to prevent or treat osteoporosis and other health problems that may result from low sex hormone levels. HRT does, however, have some risks and side effects, including blood clots, strokes, heart disease, breast cancer, prostate cancer, or liver disease. HRT should be used with caution and under the supervision of a doctor, who can monitor the hormone levels and adjust the dosage and duration of the treatment accordingly.
A fertility treatment is a procedure or medication that stimulates or assists the production of sperm or eggs, as well as facilitating conception and pregnancy. It is possible to overcome infertility caused by hypogonadism and achieve the desired family size and structure through fertility treatments. There are also risks and side effects associated with fertility treatments, including multiple pregnancies, ectopic pregnancies, miscarriages, birth defects, and ovarian hyperstimulation syndrome. To ensure that fertility treatments are suitable and safe for each patient, doctors should evaluate their suitability and safety.
Surgical procedures are used to correct or remove structural or functional problems that may lead to hypogonadism. As well as restoring the normal function or appearance of the testes and ovaries, surgery can also eliminate tumors or cysts which interfere with the hormone production or action. However, surgery also has some risks and complications, including bleeding, infection, scarring, or damage to the surrounding tissues or organs. Surgery should be performed by a qualified and experienced surgeon who can weigh the benefits and risks of the procedure.
The prevention of hypogonadism is not always possible, especially if the condition is caused by genetic or congenital factors. However, some of the possible ways to prevent or reduce the risk of hypogonadism include:
Avoiding or limiting the exposure to factors that may damage or impair the function of the testes or ovaries, such as infections, injuries, radiation, chemotherapy, or certain drugs
Maintaining a healthy weight and lifestyle, which can help to regulate the function of the hypothalamus and pituitary gland, and to prevent or manage any metabolic disorders that may affect the sex hormone levels
Seeking medical attention and treatment for any medical conditions that may cause or contribute to hypogonadism, such as tumors, cysts, infections, or autoimmune disorders
Consulting a doctor before starting or stopping any medications that may interfere with the secretion or action of the sex hormones, such as opioids, steroids, or antipsychotics
Following the doctor’s advice and instructions regarding the use and monitoring of hormone replacement therapy or fertility treatments, which can help to achieve the optimal results and avoid any adverse effects or complications
