11. A previous induced abortion does not appear to increase the risk. 12. That is worrisome because even a small number of needles can induce abortion. 13. Mifepristone induces abortions by blocking progesterone, a hormone necessary to sustain a pregnancy. 14. So did Paul Hill who, in 1994, killed a doctor for inducing abortions. 15. Women in the study overwhelmingly said they preferred the drug- induced abortion to surgery. 16. In 1993, approximately 140, 000 induced abortions were performed in Italy. 17. The report says that endomyometritis was caused by a drug- induced abortion. 18. Approximately 46 million pregnancies per year reportedly end in induced abortion. 19. An induced abortion halts these new cells at an immature stage, she said. 20. Mifepristone- induced abortions are more time-consuming and potentially more difficult than the standard surgical procedure.