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Hypogonadism
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Hypogonadism: A defect of the reproductive system resulting in lack of function of the gonads (ovaries or testes). The gonads have two major functions: to produce hormones (testosterone, estradiol), and to produce gametes (eggs or sperm). Sex hormones deficiency can result in defective primary or secondary sexual development, infertility and loss of libido. Defective egg or sperm development results in infertility. pituitary adenomas and other tumors that impinge upon the pituitary gland can cause hypogonadism (a subset of hypopituitarism) by causing either decreased production of LH and FSH or by causing hyperprolactinemia which inhibits LH and FSH production. Learn more.
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