Evolution works because of differential reproduction. If an organism has a harmful gene, it will perish before reproducing or fail to have offspring. Infertility may be nature’s way of decreeing that this man or this woman, or this couple, are not “fit” in the evolutionary sense.
So surely IVF, which enables people to bypass their infertility, must be having an effect upon human evolution.
Abstract:
Since IVF bypasses infertility it must also be having an effect on human evolution.