[St_Thomas_Aquinas]

It also may work by changing the lining of the uterus (womb) to prevent development of a pregnancy.

The pill works in a similar way.

In the early '70s, the AMA changed the definition of conception from fertilization to implantation, so that the pill would not be classified as an abortifacient.

At about the same time, homosexuality was removed from the list of psychiatric disorders.

And of course, 1973 saw Roe v. Wade.

The death toll resulting from these decisions is incalculable.

[markomalley]

The pill works in a similar way.

All hormonal contraceptives work that way.