This brings up the question, how many sperm donor children are too many?
Most people outside of the infertility world believe that there are not controls over how many children a sperm donor can father. It is stories like the two above that fuel that belief.
In the past there were no controls over how many live births there were. But that has changed. The fear of your child dating or marrying their sibling by accident is a common fear. This is why so many cryobanks track live births and offer the sibling registry.
So I go back to my question...how many sperm donor children are too many? One article I read talks about the concerns among parents and donors and the consequences of so many children being fathered by the same donor. The concern was the possibility of genetic diseases being more widespread, and the potential of half siblings living too close to each other and dating.
The laws vary by country on the limit of how many live births there are for each sperm donor. In the US it is 25 births per population of 850,000. In Germany, it is 15 births.
It is important when you are choosing a cryobank and a donor to take into consideration how many live births there are for the donor you select.
If you ever have a question or concern about the number of births from the donor you are considering using, please be sure to contact your cryobank.