Direct Answer
There is an ancient report that Origen castrated himself, and the article on Origen's life and reputation says Eusebius assumed it was true. But the article also argues that the report is doubtful because Origen's own Commentary on Matthew condemns the literal action the story attributes to him.
The Claim
The story says Origen made himself a eunuch in youthful zeal after taking Jesus' words in Matthew 19:12 literally: 'There are eunuchs who have made themselves eunuchs for the kingdom of heaven's sake.' The article says Eusebius accepted this story and gave a reason for it: Origen supposedly wanted to teach both men and women without fear of temptation.
That is why the story has continued to circulate. It is not merely a modern rumor. It appears in the early historical tradition.
The Problem with the Claim
The article also notes that the story was spread by Bishop Demetrius after his controversy with Origen, which already gives readers a reason for caution. More importantly, the article sets the report beside Origen's own words. In his Commentary on Matthew, Origen says Christians who hand themselves over to become physical eunuchs act without understanding, bring shame and reproach on themselves, and show excessive discipline rather than true wisdom.
The article quotes Origen saying he would not spend so much time refuting people who interpret Jesus' words literally unless he had met people who had dared to do such a thing and had seen others stirring up rash souls toward it.
What We Can Conclude
The fair answer is not to pretend the old report does not exist. Eusebius accepted it, so readers should know that. But the article gives a serious reason to doubt it: Origen's own teaching strongly rejects literal self-castration.
So the strongest evidence-backed conclusion is: the claim is ancient, but disputed. A review page should say that Eusebius assumed it was true while Origen's own words make the story difficult to accept as settled fact.
Read the Evidence Yourself
The main source for this answer is the Origen article linked above. Readers should compare the short answer with the source excerpt and the full linked article before treating the question as settled, especially where later summaries of Origen disagree. For broader orientation to major early Christian figures, see Who's Who in the Early Church?. Readers studying early Christian interpretation can also consult the Church Fathers Commentary.
