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How can pituitary gland disorders affect female fertility?
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infertility
Major structures and hormones involved in the initiation of pregnancy. Also seen, at right, is the development of an egg cell (ovum) from follicle to embryo.
Pituitary gland disorders can significantly impact female fertility by disrupting the hormonal signals required for the menstrual cycle and ovulation. The pituitary gland is responsible for secreting luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are essential for follicle maturation and the release of an egg.1234
Disorders affecting this gland can lead to infertility through two primary mechanisms:
- Gonadotropin Deficiency: Conditions such as pituitary tumours or other diseases can result in insufficient secretion of LH and FSH. This deficiency often manifests as oligomenorrhea (infrequent menstruation) or amenorrhea, preventing normal ovulation.12
- Hyperprolactinemia: Excess production of prolactin—often caused by prolactinomas or certain medications—inhibits the secretion of gonadotropins. This disruption leads to decreased cyclic ovarian function, resulting in infertility, menstrual irregularities, and symptoms of estrogen deficiency.52
When pituitary dysfunction is identified as the cause of infertility, medical professionals may use treatments such as dopamine-mimicking drugs to lower prolactin levels or hormone therapies, including gonadotropin injections, to stimulate follicle maturation and ovulation.52