Adolf Hitler did not have a Jewish grandfather, say researchers who analyzed the Nazi dictator’s DNA

Old rumors say that Hitler’s father was the result of an affair between his grandmother and her Jewish mistress. However, researchers claim to have refuted this myth.

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Page from book "My camp" Nazi dictator Adolf Hitler, at the Holocaust commemoration in Paris, August 6, 2025. (HENRIQUE CAMPOS / HANS LUCAS / AFP)

A page from the book “Mein Kampf” by Nazi dictator Adolf Hitler, at the Holocaust memorial in Paris, August 6, 2025. (HENRIQUE CAMPOS / HANS LUCAS / AFP)

They hope to dispel old rumors once and for all. Adolf Hitler did not have a Jewish grandfather, according to researchers, who say they analyzed a piece of cloth soaked in the Nazi dictator’s blood in a documentary called Hitler’s DNA: profile of a dictatorbroadcast on Saturday November 15 on the British channel Channel 4. The fabric samples studied came from the sofa on which the Nazi dictator committed suicide on April 30, 1945, the researchers explained. This is the first time researchers have sequenced Hitler’s genome, said Turi King, a geneticist at the University of Bath who led the scientific study. Rumor has it that Hitler’s father was the result of an affair between his grandmother and her Jewish employer, but researchers have discovered a genetic match between the dictator and the male line in Hitler’s family, which would not have been possible if he had been the child of a man other than his father, explains Turi King.

Furthermore, DNA analysis of the Nazi dictator revealed that he was “very likely” suffers from Kallmann syndrome, which is often manifested in men by low testosterone levels and abnormal development of sexual organs. This syndrome is often associated with cryptorchidism (undescended testicles), which can cause micropenis. DNA analysis made it possible for the first time to corroborate historical documents that suggest he suffered from right-sided cryptorchidism, researchers said.

The test also showed “very high” scores (above 1%) for autism, schizophrenia and bipolar disorder tendencies. But researchers emphasize that these riots cannot explain Hitler’s policies, which led to the deaths of tens of millions of people, including the genocide of six million Jews.