Adolf Hitler may have lived with a rare genetic disorder known as Kallmann Syndrome, according to researchers and documentary producers who carried out DNA testing on what they say is the Nazi leader’s blood. The Cleveland Clinic notes that this condition can interfere with the start of puberty and may result in traits such as undescended testicles and a micropenis.The new findings also rule out a long-standing rumor that Hitler had Jewish heritage, the research team said.Hitler Likely Had Kallmann Syndrome, New DNA Investigation SuggestsFor decades, wartime songs and jokes poked fun at Hitler’s genitalia, though none of those claims had scientific support. Now, an international group of historians and scientists believes their results strengthen theories about abnormalities in his sexual development.Alex Kay of the University of Potsdam said the diagnosis could help explain Hitler’s lifelong distance from women and his probable lack of intimate relationships. “No one has really been able to account for his discomfort with women,” Kay noted, as per CBS News, “If he had Kallmann Syndrome, this may offer the explanation that has been missing.”The full findings appear in an upcoming documentary titled Hitler’s DNA: Blueprint of a Dictator.What Is Kallmann Syndrome?Kallmann syndrome is an inherited condition in which puberty is either greatly delayed or does not begin at all, and the affected person also has a reduced or absent sense of smell. It stems from a shortfall of gonadotropin-releasing hormone (GnRH), a key hormone that signals the body to start puberty and develop sexual characteristics. In this disorder, certain neurons that should move from the nasal region to the brain during early development do not reach their destination. As a result, the sense of smell is impaired and the olfactory bulbs remain poorly formed. The syndrome may appear alongside other birth defects and is seen far more often in males.How Researchers Obtained Hitler’s DNAAs per The Guardian, according to the team, the genetic material was taken from a fragment of fabric believed to come from the sofa where Hitler killed himself. Their analysis pointed to a high likelihood of Kallmann Syndrome.Britain’s Guardian, which reviewed the documentary, cautioned that the researchers were unable to collect new DNA from any of Hitler’s surviving relatives in Austria or the United States. Those family members, the newspaper said, declined participation because they wished to avoid publicity.Claims And Criticism Around Psychological PredispositionsProducers at Blink Films, which created the documentary, reported that the DNA sample showed unusually high polygenic risk scores for autism, schizophrenia, and bipolar disorder. The Guardian highlighted that many experts remain skeptical of using these scores to comment on an individual’s mental health risk.David Curtis, an honorary professor at University College London’s Genetics Institute, told the newspaper that such scores speak to trends in large groups, not to precise predictions about one person. Even someone in the highest percentile may still face only a small actual chance of developing a condition.The research team added that even if Hitler had these predispositions, they could not excuse or rationalize his political decisions or the atrocities carried out under his command. World War II claimed more than 50 million lives, including six million Jews murdered in the Holocaust.Geneticist Turi King, known for identifying the remains of King Richard III and who contributed to this project, remarked that the results place Hitler among the groups targeted by his own eugenics policies. “If he had been able to examine his own DNA,” she said, “he almost certainly would have condemned himself.”DNA Findings Reject Myth of Jewish AncestryThe study also challenges the rumor that Hitler’s paternal grandmother became pregnant by a Jewish employer. According to the production team, Y chromosome evidence matches that of Hitler’s known male-line relative, which would not have been possible if the pregnancy had resulted from an unrelated man.The myth resurfaced in 2022 when Russia’s foreign minister, Sergei Lavrov, invoked it while defending the invasion of Ukraine and repeating the Kremlin’s claim that its goal was to “denazify” a country led by Jewish president Volodymyr Zelenskyy.
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