Doctor Accused of Secret Sperm Use | Dayton News

Dayton News Today | 2 Min News | The Daily News Now! · Aug 12, 2026 · 1m

A Wisconsin woman and her son are suing a retired fertility doctor, alleging he secretly used his own sperm to impregnate her in 1982—deceiving her into believing an anonymous donor was involved. The son, now in his 40s, discovered the truth through a DNA test this year, linking him directly to the doctor’s family tree. The lawsuit accuses the 91-year-old physician of betraying patient trust and breaches of professional ethics, with insurance companies also named. Dr. Dettmann denies any wrongdoing, claiming memory loss due to the passage of time and urging other former patients to come…