A rare DNA analysis has raised fresh claims about Adolf Hitler’s medical history, suggesting the Nazi dictator likely suffered from Kallmann syndrome, a rare genetic condition that can delay puberty and affect sexual development. The findings, based on genetic material believed to be Hitler’s blood, also dispute longstanding rumors that he had Jewish ancestry. The research, which took over four years to complete, is featured in the two-part documentary “Hitler’s DNA: Blueprint of a Dictator,” scheduled to air this weekend on the UK’s Channel 4. According to scientists and historians involved in the project, the DNA sample was obtained from...