A steroid hormone that helps in development of male characteristics and produced in testes, adrenal cortex and ovaries is known as testosterone. Though both male and female bodies are fundamentally similar, yet, it is believed that testosterone is specifically a male hormone, which is not true. Also, it has a wide variety of usages, with its help being required in the governing of various tissues such as blood vessels, peripheral nerves, endocrine glands, vaginal tissue, synovium and adipose tissue.

There are a number of causes for testosterone deficiency that includes aging, deficiency of dehydroepiandrosterone), aromatase, zinc, and liver problems. With consumption of a number of leafy vegetables, and protein related food, this testosterone level can be increased considerably. At times certain pills or creams along with a change in lifestyle can be used for increasing testosterone content.

To diagnose the cause of erectile dysfunction, testosterone level is tested in males.  In females, this test is done to check out details associated with menstruation problems, virilisation or polycystic ovary syndrome.

With the recent 2016 discovery by American Urological Association phase 3 reports, an oral replacement therapy has been found to treat male hypogonadism. So rather than medicines and gels, this oral therapy is a better choice. As per reports, a doctor in Maine performed a testosterone injecting therapy in males to help them deal with mid age depression.