What an abortifacient is -- and what it isn't.
The reality is that there is overwhelming scientific evidence that the IUD and Plan B work only as contraceptives.
There is only one drug approved to induce abortion. It is called RU-486 (mifepristone) and is not on the FDA's list of approved contraception. It is available only by prescription and no employer is forced to pay for it as part of an employee health plan.
To understand why scientists believe that the IUD, Plan B and Ella are not abortifacients, it is important first to understand the biology of conception. In order for a woman to become pregnant after sexual intercourse, her ovaries must release an egg (ovulation). Sperm can remain viable inside her reproductive tract for five days. Therefore, if intercourse takes place up to five days before ovulation or within two days after, both sperm and egg are viable and the egg cell can be fertilized.
Now, just because an egg is fertilized doesn't necessarily mean that it will develop into an embryo. For that to happen, the fertilized egg must be implanted into the endometrium that lines the uterus. Implantation happens seven days after fertilization, if it happens at all. Scientists estimate that, at a minimum, two-thirds of fertilized eggs fail to implant. Some scientists estimate that the number may even be as high as 80 percent, according to Discover Magazine.
For this reason, according to the medical definition, a woman is not considered pregnant until the developing embryo successfully implants the lining of the uterus.
Some church officials argue that a woman is pregnant at the moment of fertilization. If that is the case, then it follows that 60 to 80 percent of the time, this natural process results in a massive loss of life.