As far as I know there is no literature on this subject. But what is known is that organisms accumulate more mutations as they age, and that the older a woman is the greater likelihood of their child being born with developmental disorders such as Down Syndrome.
Taking into account the evidence of Y-Chromosome michrochimerism, it is likely that the more sex partners a woman has had, the more likely her future children will have the genes of several of her sex partners, which can lead to other outbreeding depression related unpleasantness.
Taking into account the evidence of Y-Chromosome michrochimerism, it is likely that the more sex partners a woman has had, the more likely her future children will have the genes of several of her sex partners, which can lead to other outbreeding depression related unpleasantness.