Sperm Donor's Hidden Gene Sparks Cancer Fears in 200 Children

A Danish sperm donor who carried a rare cancer-causing gene has fathered nearly 200 children across Europe. Several of his biological children have reportedly developed cancer. The case emerged after the sperm bank involved admitted it overused the man's samples. His donations were distributed to clinics in 14 countries. Medical experts warn the situation raises serious ethical and health concerns. The gene in question significantly increases the risk of certain cancers, including in the digestive system. It is normally very rare in the population. The sperm bank stated it followed all regulations at the time of the donations. Current rules now strictly limit how many families a single donor can help create. An investigation into the long-term health outcomes for the affected families is ongoing.