Sorry, that's nonsense. Miscarriages occur for all sorts of reasons, not just hormonal, and many of them *are* abrupt. A miscarriage caused by genetic defect or an immune system incompatibility is going to have the same biochemical effect on the mother's system (including the breasts) as an abortion.
If there's a link between abortion & breast cancer, it's a *correlation,* not a causation, and it's probably because women who have abortions have less children (for *all* sorts of reasons.) Having a larger number of children (and nursing them) is *known* to cause a reduction in incidence of breast cancer.
Yes, I'm pro-life - but I don't think we should make the case with dubious distinctions between abortion & miscarriage.
What I wrote about was the effect of an abortion on a woman's breasts. If you will read what I wrote carefully you will see that hormones open up the cells and ready them for their job. If they are not closed up they become vulnerable to things like cancer. It is a biochemical fact.