NHS did a study on female doctors who drop out of workplace at way higher rate than men and all the social/economic implication of it given the huge cost invested into medical education.
I don't think that's the same thing as what the parent post is suggesting. Based on my wife's opinion (a female physician), female physicians seem to be dropping out or working only part time for child rearing purposes. It does have huge healthcare implications though, since females are now making up a large number of physicians and there are only a very small number of slots at medical schools.