Prolactin:Ahormonesecreted by thepituitary glandthat stimulateslactation(milk production). It also has many other functions, includingessentialrolesin的维护immune system. Abnormally high prolactin can delay puberty, interfere withovulationin women, decreaselibidoin men, and decreasefertility. Elevated prolactin (hyperprolactinemia) may be due to abenigntumor in thepituitaryglandcalled a prolactinoma.
