How? Because it vastly decreases the resistance of girls, and increases the insistance of boys/men, toward sexual intercourse with the minor girls. ("Don´t worry. There´s a fix you can get afterwards.") Some pregnancies are prevented; a whole lot more are initiated, simply because of this strong cultural-undertow: the overall surge of opportunistic boys & men having sex with young girls.
I´m not just predicting this. I´m reporting it. The statistics-crunchers at Alan Guttmacher Institute, the Marie Stopes Foundation and CDC have known this for years about the availability of OTC hormonal doses for minors. The behavioral impact negates, or even overwhelms, the pharmaceutical impact.
Exactly.
This whole thing is about making younger and younger girls sexually available to men.