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Danish Nazi Became Sperm Donor in Sweden – Now His Children Want Answers

  • Walther Frisch, a Danish SS soldier imprisoned after World War II for supporting Adolf Hitler, later became a sperm donor at Karolinska Hospital in Sweden and is the biological father of at least 15 children from four countries.
  • The donor children, including Thomas Rasmussen and his half-brother Mats Rydberg, are surprised that a convicted pro-Nazi could be a sperm donor in Sweden and question whether they are part of an ideological racial project.
  • There are no records of Walther Frisch's sperm donations at Karolinska Hospital or in Swedish archives; the hospital condemned any ideologically motivated choice of donor as completely unacceptable and unethical.
  • Estimates suggest that Frisch may have fathered over 100 children, as only a small fraction of the population has taken DNA tests to confirm this number.
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28 Articles

El PeriódicoEl Periódico
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informacion.esinformacion.es
Center

"How on earth can a former Danish SS soldier be my biological father?" asks Thomas Rasmussen, one of 15 people so far identified as having been conceived using the sperm of a man named Walther Frisch. His case is one of those illustrated in the documentary released by Danish public television DR, titled "The Secret of the Danish Nazi Donor." His question goes beyond the private sphere. According to the research of the documentary's author, Tobia…

·Barcelona, Spain
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Lean Right

A Danish ex-Nazi soldier who frequently worked as a sperm donor in Sweden in the 1960s is the biological father of at least 15 people, a number that could rise to dozens, according to a documentary by Danish public television DR.

·Guayaquil, Ecuador
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Center

The DNA evidence has confirmed that Walther Frisch is the biological father of Almenys 15 people from four countries

Center

After World War II, a Danish Nazi and SS soldier managed to have at least 15 donor children in Sweden.

·Copenhagen, Denmark
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Lean Left

Walther Frisch was an SS soldier, public Nazi and donor to 15 people via fertility clinic at Karolinska sjukhuset. Now you can see the different ideas in this ideological project. – Heinrich Himmler sat att varje SS officer borde ha minst fyra barn. There is a lot of results from the Nazi ideologist, from the German language Mats Rydberg in the DR documentary.

·Stockholm, Sweden
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DR broke the news in Copenhagen, Denmark on Monday, August 10, 2026.
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