Early pill dosages were so high they obliterated a woman's cycle, preventing ovulation completely. These doses also caused strokes, clots, MI's, etc, so subsequent dosages were decreased.
With decreasing doses, breakthrough ovulation increases, i.e., a woman releases an agg more often.
Yet the efficacy of the pill remains at 96-97%.
Why???
Because of postfertilization effects!!!
Postfertilization effects prevent the implantation of a fertilized egg by decreasing follopian tube motility and thinning the lining of the uterus, either preventing the fertilized egg from reaching the endometrium, or preventing its implantation once it does arrive.
Therefore, since an egg has been released, conception has occured, yet the fetus dies, this is an early chemical abortion!!!
Please, if you are going to try to sound like you understand the medicine by making such statements as you have about old dosages and side effects profiles, at least get your facts straight.
I recommend you start with this:
Postfertilization Effects [early chemical abortion effects] of Oral Contraceptives and Their Relationship to Informed Consent, from the Vol. 9 No. 2, February 2000 Archives of Family Medicine, a journal of the American Medical Association.
One more thing...you must compare apples with apples.
The synthetic progesterone in the pill is thought to have caused many of the clotting problems of the early pills.
Todays pills have only one tenth the amount of synthetic progesterone. Yet this newer third generation synthetic prosterone is thirty times stronger than that of the early pill.
Therefore, even though the dose is only one tenth, the dosage of synthetic progesterone itself is three times stronger overall than the early pill.
So the abortifacient effect is three times stronger, not less than the early pill.
if you are going to comment on these things I suggest you study up on pharmacology. Womens' lives are at stake, and babies are being aborted in the earliest stages. This is too serious an issue to make false statements like yours (although I'm sure you are not purposely stating falsehoods.)