Human Fertilization

Abortion, Birth Control, and Medical Deception

Robin Marty at the pro-abortion blog RH Reality Check attacked pro-life advocates for refusing to accept the definition of pregnancy given by the “medical field.” She complained that “anti-choice activists” are fighting a “war against contraception.” (Presumably, this is part of the war against women.) But she conveniently failed to mention the reason pro-life advocates oppose allowing the “medical field” to provide this definition. So, I’ll explain.

Human Fertilization
Human Fertilization

In 1965, the medical definition for when pregnancy begins was changed by the American College of Obstetricians and Gynecologists (ACOG). Why? Ideology.

At the 1959 Planned Parenthood/Population Council symposium, Dr. Bent Boving argued for changing the definition by moving the date of conception from when fertilization occurs to when implantation occurs. He said that “the social advantage of [birth control] being considered to prevent conception rather than to destroy an established pregnancy could depend upon something so simple as a prudent habit of speech.”1

In 1964, Dr. Christopher Tietze pushed this propaganda further. After noting that many religious and legal experts accept medical consensus as fact, he said that “if a medical consensus develops and is maintained that pregnancy, and therefore life, begins at implantation, eventually our brethren from the other faculties will listen.”2 Tietze would later win the Planned Parenthood Federation of America Margaret Sanger Award for outstanding contributions to the pro-abortion movement.

The concern then was both with public opinion, which opposed killing innocent human life, and many state laws, which prohibited substances or devices that caused abortion. Because while birth control pills work primarily by preventing conception, they also have a secondary effect of preventing an already conceived human life from implanting in the uterus. Abortion industry leader Planned Parenthood’s own website states this about the pill:

“The hormones also thin the lining of the uterus. In theory, this could prevent pregnancy by keeping a fertilized egg from attaching to the uterus.”

While the statement is somewhat dismissive of the potential effect, what Planned Parenthood acknowledges is clear. Early destruction of human life post-fertilization is possible with the pill.

So, to avoid having the pill labeled a potential abortion drug, a “new” definition of conception was needed to overcome these obstacles. And the ACOG obliged. Without a shred of scientific evidence to justify the change, the ACOG redefined conception as “the implantation of a fertilized ovum [egg].”3 Mission accomplished.

Until 1965, the definition of conception had been based on facts. Since then, however, the facts have been deliberately ignored and the definition has been based on ideology. Pro-abortion ideology.

Science proves that life begins at conception, at fertilization, when sperm and egg unite, forming a zygote.4 In the medical field, however, pro-abortion proponents object solely on the grounds that a pregnancy is usually undetectable until implantation, which occurs approximately six days after fertilization. But what is being implanted? A fertilized egg, they admit. And what is a fertilized egg? A human life, they admit. So, pro-abortion proponents claim pregnancy doesn’t begin until implantation, but admit that a “non-pregnant” woman has, in fact, been carrying a human life for approximately six days. Sound logic.

To this day, the irrefutable fact that birth control pills can actually cause early abortion has been intentionally withheld from most women.

1. Bent Boving, “Implantation Mechanisms,” in Mechanics Concerned With Conception, ed. C.G. Hartman (New York: Pergamon Press, 1963), p. 386.
2. Proceedings of the Second International Conference, Intra-Uterine Contraception, October 2-3, 1964, New York, ed. Sheldon Segal, et al.., International Series, Excerpta Medica Foundation, No. 86, p. 212.
3. American College of Obstetrics and Gynecology (ACOG). Terminology Bulletin, “Terms Used in Reference to the Fetus.” Chicago: ACOG, September 1965.
4. Medical textbooks still teach that human life begins at conception when sperm and egg unite. See Keith L. Moore, T.V.N. Persaud, The Developing Human: Clinically Oriented Embryology (Philadelphia: Saunders, 2008). Keith L. Moore is a recipient of the American Association of Anatomists’ highest award for excellence.

10 thoughts on “Abortion, Birth Control, and Medical Deception

    1. Even on PP’s website it states that the pill will prevent ovulation (not an abortion) but if it can’t do that, it will prevent the embryo from implanting, and in that way starving it out from the nutrients (which is an abortion). The only thing is that PP doesn’t state that its an abortion, just the prevention of the scientific term of “pregnancy”. Its ALL in the manipulation of words.


    2. Is there any proof that it doesn’t? The question is can a breakthrough ovulation happen with a thin uterus lining?


      1. The pill inserts list three possible effects of the pill…
        It can prevent ovulation (releasing an egg from the ovary) It can cause the mucus in the cervix to change so that if sperm reach the cervix, they are not allowed to enter, and It can irritate the lining of the uterus so that if the first two
        actions fail, and the woman does become pregnant, the tiny baby boy or
        girl will die before he or she can actually attach to the lining of the

        In other words, if the third action occurs, the woman’s body rejects
        the tiny baby and he or she will die. This is called a chemical abortion


      2. The reason why implantation is used instead of fertilization is simple. Identical twins are formed between fertilization and implantation. The blastocysts divides in two and the two new blastocysts implant separately. Sure, ban abortion after implantation, but banning it before implantation just makes no sense. How can it be a human life if it can divide into two human lives?


  1. Please.  It’s only a theory that was used to sell the Pill, not an irrefutable fact.  Pro-life Christian physicians have tackled this issue here:   
    Please read it right to the end, especially the part about the corpus luteum preparing the uterus for implantation of the embryo.  
    And please don’t fight against a contraceptive choice that PREVENTS many, many women from seeking abortions.


    1. According to the Guttmacher Research Institute, Planned Parenthood’s own research arm, most women who go in for abortions were using contraception.

      They count on that failure for their abortions. Contraception does NOT prevent abortion, it merely tricks people into a false sense of security.

      Besides, the pill is loaded with estrogen and/or progesterone, which are known carcinogens, meaning they have a high chance of causing cancer. According to the National Institutes of Health and American Cancer Association, they are level 1 carcinogens, up there with tobacco and asbestos. So either take the pill and risk the death of a child and yourself, or don’t take the pill and save both lives. IMHO, it’s not much of a contest.


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