Many men, especially after the age of 30, have a lack of natural testosterone production. This is referred to as Low T and the clinical name for low levels of testosterone is hypogonadism. There are several types of treatment for low testosterone including injection therapy and prescription drugs. Here are some causes of low testosterone.
Primary hypogonadism is caused by testes that are underactive and do not produce the proper levels of testosterone. Causes could be hereditary or conditions and include: Klinefelter’s syndrome (XXY chromozones), undescended testicles and hemochromatosis (too much iron in the blood). High levels of iron can cause testicular atrophy and damage to the pituitary gland.
Another cause that is not inherited or a condition is damage to the testicles sustained through an injury. Damage can also be caused by mumps, chemotherapy or radiation.
The pituitary gland and hypothalamus in the brain control the production of hormones and secondary hypogonadism is caused by damage to these parts of the brain. Conditions that contribute to this include HIV/AIDS, Kallmann syndrome (affects the hypothalmus), pituitary disorders and inflammatory diseases like TB.
Other causes are getting older, certain medications and obesity. Steroids and opioid pain medications affect the hypothalamus and the pituitary gland. Obesity can alter hormone production.