[something2]

In the case of switching the eggs, is it possible that the host mother would be more likely to reject it? Because in that case, I feel it's a fairly clear case in which you have directly affected one's ability to have a family by doing this.

[tathougies]

Not sure about one woman's eggs in another woman, but this is certainly true of an anonymous sperm donor. In order to have the lowest chance of pre-eclampsia the woman needs to have been exposed vaginally to the man's semen for six months. Donor sperm children thus have higher rates of pre-eclampsia in pregnancy.

https://www.ncbi.nlm.nih.gov/pubmed/24011785

Similarly, donor sperm has been shown to increase pre-eclampsia

https://www.ncbi.nlm.nih.gov/pubmed/25282539

Not all sperm is the same, regardless of what the market or the fertility industry thinks. There's a purpose to the act of sex.