Not true- the ovulation supressing hormones caused deadly side-effects in trials, so they upped the non-implantation facets. It mainly works to prevent implantation. That's the truth. And if only 3-5% of babies die, how was it your decision to sacrifice them to the God of conveinent sex when you want it.
In case you didn't notice, I am not saying that you should use hormonal BC.
:)