What causes female infertility?
About one quarter of female infertility is caused by a problem with ovulation. This can be due to an imbalance of luteinizing hormone (LH) and follicle-stimulating hormone (FSH), an injury to the hypothalamus or pituitary gland (where these hormones are produced), pituitary tumors, or too little or too much body weight. Other hormonal conditions that can affect fertility include thyroid problems, diabetes, polycystic ovary syndrome (PCOS), premature ovarian failure (POF), and occasionally Cushing s syndrome.