What are the some causes of female sterility?

Age,anatomy,hormones: Reasons for female infertility include age. Fertility declines significantly after age 40. Chromosomal or genetic conditions like turner's syndrome are cause. She may have abnormal anatomy such as a malformed uterus which cannot support pregnancy. Lack of ovulation due to ovarian cysts or hormones are problems. Chemotherapy can cause early menopause. Some women don't know when to have sex.