Discussing contraception with a group of pastors recently, I was amazed at the lack of information they had as to the abortifacient nature of hormonal contraceptives. It was of great interest to them for me to describe the triphasic nature of hormonal contraceptives.
Amazingly, most people still do not know that prevention of implantation is one of the three actions the use of hormonal contraceptives relies upon. Here we are no longer discussing contraception, but rather abortion. Most people who use hormonal contraceptive are unaware that they are to some extent relying upon abortion as one of the modes of this form of birth control.
On the other hand, some who know about the triphasic claims of hormonal contraceptives try to deny the third phase of action that the drug manufacturers advertise about their products. They say there is not enough evidence that this third phase exists. In contradiction to this, fertility experts would be the first to admit to the abortifacient action. Hormonal contraceptives are known to thin the endometrium to a thickness which is considered inhospitable to implantation - a thickness fertility experts would consider a serious impediment to retaining a successful pregnancy. Why this information is still so little known is a mystery to me.
The other thing this discussion with pastors brought out is why so many pro-lifers are so intent on identifying the exact scientifically defined moment at which life begins. It seems to me that the only reason to do this is to identify the point before which we might feel free to interfere with God's procreative purpose of marriage. How pro-life is that?