Is there any new evidence that supports the argument that BCPs act by causing an early abortion?
Yes. In early 1996 researcher Stephen Somkuti published an article concerning the endometrium and a group of molecules called “integrins.”27 Integrins are a group of adhesion molecules that have been implicated as playing an important role in fertilization and implantation. There are several different types of integrins, and it is believed that the endometrium is most receptive to implantation when it expresses certain types of integrins. Birth control pills change the type of integrins that the endometrial lining produces, theoretically making it more difficult for the preborn child to implant. In the words of Dr. Somkuti: “These alterations in epithelial and stromal integrin expression suggest that impaired uterine receptivity is one mechanism whereby BCPs exert their contraceptive action.”28 Has anyone proven that the BCP causes early abortions? In order to prove if and how often women are having abortions while taking BCPs, one needs to be able to measure how often women become pre
