Netflix’s ‘Man With 1000 Kids’ puts a spotlight on the lack of international regulations for sperm donors

A Netflix docuseries has put a spotlight on the unregulated world of sperm donation, particularly the lack of stopgap measures that might prevent donors who have been banned by one country from simply going elsewhere to donate more.

Released earlier this month, “The Man With 1000 Kids” explores the fallout from the case of serial sperm donor Jonathan Meijer, a Dutch man who fathered children around the globe via donations to sperm banks, as well as through private meetings he reportedly held directly with prospective mothers. The Dutch Society for Obstetrics and Gynecology prohibited him from donating sperm in the Netherlands in 2017, but he continued to donate to other countries afterward.

The result of Meijer’s actions is there are hundreds, or perhaps thousands, of half-siblings who may not realize they are related to one another. Their risk of accidental inbreeding is real: In 2021, The New York Times reported some of Meijer’s offspring had come across one another on the dating app Tinder.

“Once, I swiped on a sister and she swiped right on me at the same time,” said a half-brother, Jordy Willekens, who lives in the Netherlands. “I have a very trained eye by now.”

Experts and advocates for donor-conceived people say Meijer’s story is not an outlier. 

“There’s nothing keeping donors from donating anywhere. If a donor is banned in their home country, they just go somewhere else,” said Wendy Kramer, director of the Donor Sibling Registry, which she co-founded in 2000 with her son, Ryan, who was donor-conceived. The worldwide matching site has connected more than 26,000 half-siblings and donors so far, and Kramer said some people have found over 200 matches.

“There’s no regulation. There’s no oversight,” Kramer added.

Without any sort of global tracking system, donors who have been banned in one country are easily able to keep donating in other countries, said Jody Madeira, a professor at Indiana University Maurer School of Law who is writing a book about fertility fraud by doctors and serial donors. 

“They shouldn’t donate. They promise not to. But ‘shouldn’t’ doesn’t mean ‘can’t,’” she said. “And there’s no lightning bolt that’s going to come down because there’s no international registry.”

Countries have rules for the number of offspring sperm donors can produce, though many are recommendations rather than laws. In the Netherlands, nonbinding guidelines limit clinic donors to 25 children. In the…