Gonadal disorders stem primarily from hormone dysfunctions. The ovaries and testes produce many of the same hormones, but in different amounts, depending on gender, with males producing more testosterone and females producing more estrogen. In men, gonadal disorders refer to disorders of the testes, which are the sexual reproductive organs that produce hormones such as testosterone. They also produce sperm. Male gonadal disorders can lead to serious complications, including infertility, sexual dysfunction and hypogonadism, which is a result of low testosterone production. The most common treatment for gonadal disorders is hormone replacement therapy, as this works to replenish diminished levels of hormones and restore proper balance. Low levels of testosterone is a major symptom of a gonadal disorder and can be identified through a blood test. The test is typically performed when levels are highest in the morning, as testosterone levels can drop by as much as 13 percent during the day. In women, gonadal disorders refer to disorders of the ovaries, the sexual reproductive organs that produce eggs and the hormones estrogen and progesterone. Gonadal disorders can also produce infertility in women, and can also lead to hypogonadism, a condition that results from low levels of estrogen and progesterone. Hypogonadism in women can also affect the production of eggs.