Candace Tucker spent a lot of time thinking about cancer. Her family had received frightening diagnoses over the years: Her grandfather with prostate cancer , her grandmother with breast cancer , and her aunt with pancreatic cancer . Tucker also worked at an oncology practice in her small Texas town. She was surrounded daily by both cancer patients and physicians.  Still, when she noticed some strange bowel movements and a small amount of blood in her stool in September 2025, she thought