Professor Thomas Lundmark, who has completed an authoritative biography of Braun’s life, said she likely suffered from Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome.
The rare condition occurs when an unborn baby fails to fully develop a reproductive system, leaving them with little or no uterus and a vaginal canal that can be short, narrow or totally missing.
People with untreated MRKH say it makes sex agonising and many seek surgical intervention – including Eva Braun.
The testimony of others who knew Braun personally sheds further light on the nature of her relationship with the Nazi kingpin.
During a trip to Rome, Eva confessed to her translator, the Nazi diplomat Eugen Dollmann, that she had no physical intimacy with Hitler.
According to Dollmann’s memoir, she said: “Mission, mission, mission is all he knows. The very idea of physical contact would mean contamination of his mission.
“Many times watching the sunrise together he has confessed to me that he can only love Germany.
“The youth of Germany, who look up to him as an example, shouldn’t have to be disappointed by sordid love stories, for then they would lose trust in the cause.”
In Professor Lundmark’s view, there’s no cause to doubt Dollmann’s testimony – especially since it makes for a less salacious story.
He added: “Dollmann had no reason to make this stuff up.”
The professor also cites Hitler’s personal physician, Dr Karl Brandt, and two of his secretaries, Gertraud Junge and Christa Schroeder, who dismissed any notion that there was a sexual relationship with Braun.
The Berghof’s caretaker, Herbert Döhring, said on camera: “There is no evidence. We — my wife — could not find anything at all, nor could the chambermaids, no one, not even the servants could ever find anything.
“My wife was always so curious — she would inspect the laundry when Hitler had left. Nothing, nothing, nothing.”
Even Hitler himself, in his last will and testament, suggests a platonic relationship when he credits Braun for “many years of faithful friendship”.
The only mention he makes of love is of love for his people.
Professor Lundmark said: “There’s no person close to Eva who contended that they had a romantic relationship, not even her parents.
“She never told anybody that, that there’s any record of. So the likelihood of them having any intimacy is basically nil.”
The prof said Hitler used Eva as a “shield” from speculation about his personal life.
He concluded: “She literally lived for Hitler and he used her.”
Hitler and Eva married in the bunker of the Reichstag in 1945, shortly before they killed themselves.
Professor Lundmark’s book Eva Braun: Her Life and Times: 1912-1945 is available on Amazon.