Does medical abortion increase the risk of breast cancer?
No, having an induced abortion does not increase a woman’s chance of developing breast cancer. The World Health Organization has stated that “sound epidemiological data show no increased risk of breast cancer for women following spontaneous or induced abortion.”
 Safe Abortion: Technical and Policy Guidance for Health Systems. The World Health Organization. Second Edition. 2012 http://apps.who.int/iris/bitstream/10665/70914/1/9789241548434_eng.pdf