What causes polycystic ovaries?

The reason of polycystic ovary is more, include following a few respects basically. Adrenal cortical function is hyperactive, the cell of adrenal cortical reticular zone secretes excessive androgen, cause not oviposit. Female reproductive endocrine axis shows abnormal conditions, mainly due to pituitary function excitation, follicle stimulating hormone secretion, stimulation of theca cells, theca cells produce a large number of androgens, androgens suppress estrogen levels, low doses of estrogen negative feedback and pituitary, so that luteinizing hormone can not reach peak, follicles can not ovulate, thus forming polycystic ovary. Finally, because the body produces resistance to insulin, high insulin levels can cause obesity and make the body produce more androgens.