As mentioned before, women with PCOS who are overweight or obese are at a heightened risk of PCOS complications, such as sleep apnoea and developing endometrial cancer. Weight loss can improve insulin sensitivity, cutting the risk of developing complications such as diabetes. Being overweight or obese can also trigger certain PCOS symptoms, for example irregular periods. So losing weight, by eating a healthy balanced diet, will both cut the risk of PCOS complications as well as improving symptoms.