Combined oral contraceptives (COCs) containing both estrogen and progestin do not contribute to the development of enlarged breasts (macromastia) – nor do they increase the risk of breast regrowth in adolescents and young women following breast-reduction surgery, reports a study in the October issue of Plastic and Reconstructive Surgery®, the official medical journal of the American Society of Plastic Surgeons (ASPS). The journal is published in the Lippincott portfolio by Wolters Kluwer.