PCOS ( Polycystic ovary syndrome ) is a problem in which a woman's hormones are out of balance. It can cause problems with your periods and make it difficult to get pregnant . PCOS also may cause unwanted changes in the way you look. If it isn't treated, over time it can lead to serious health problems, such as diabetes and heart disease . Most women with PCOS grow many small cysts on their ovaries. That is why it is called polycystic ovary syndrome . The cysts are not harmful but lead to hormone imbalances. Early diagnosis and treatment can help control the symptoms and prevent long-term problems. The sex hormones get out of balance. Normally, the ovaries make a tiny amount of male sex hormones (androgens). In PCOS, they start making slightly more androgens. This may cause you to stop ovulating , get acne , and grow extra facial and body hair . The body ...