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JERUSALEM (JTA) — Israel’s Supreme Court has ordered the country’s Health Ministry to explain why it will not allow an Israeli woman to undergo in vitro fertilization using the sperm of a Jewish Brooklyn mathematics professor.

Ari Nagel has fathered at least 33 children in the last decade with sperm he donates free of charge. The married father of three has previously donated his sperm to six Israeli women, but they have not been allowed to use it.

In December, a seventh Israeli woman, 43, asked a private clinic to allow her to use frozen sperm sent to Israel from Nagel. The clinic said it could neither store nor use his sperm because it would violate Health Ministry requirements and Israeli law.

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The woman and Nagel challenged the refusal in the Supreme Court.

Sperm donation in Israel is anonymous unless the male donor signs documents saying he will co-parent with the mother. The Ministry of Health has said “the claim of an intention to perform true joint parenthood with Mr. Nagel is not sincere or reasonable” based on the sheer number of children he has sired with his donated sperm.

The court has asked Nagel to submit a detailed affidavit within 30 days showing with supporting documents that he has satisfied the Health Ministry requirements. He must provide details on “his status and that of his wife from his marriage and his children with her,” as well as information regarding his “parental commitment,” Haaretz reported.

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