Paul Nathan

Paul Nathan is a pediatric oncologist at SickKids who leads the AfterCare Program for childhood cancer survivors, with a research focus on reproductive and endocrine late effects. His studies on gonadotoxicity, fertility preservation strategies, and hormonal outcomes after childhood cancer treatment have informed international guidelines for reproductive health monitoring. His contributions to the Canadian Partnership for Childhood Cancer Survivorship have helped establish national standards for long-term follow-up in Canada.