How a hyper-fit founder used AI to outsmart a rare cancer diagnosis
Conno Christou was the picture of health, tracking his sleep with multiple wearables and monitoring nearly 100 biomarkers each year. Then, after a workout, his arm swelled. Doctors found blood clots, but a pre-op scan revealed something far worse: an 11-centimeter tumor behind his sternum. A biopsy confirmed aggressive non-Hodgkin’s lymphoma, a cancer so rare it affects just one in 420,000 people. His first oncologist recommended a lighter chemotherapy regimen. A second opinion suggested the opposite—a far more aggressive treatment with an 85% success rate versus 60%. Christou didn’t stop there. He gathered 12 medical opinions in two days, all but one agreeing on the harder path. He took it, treating his fight like a startup: data-driven, relentless, and structured. Throughout six months of chemotherapy, he logged every detail—sleep, nutrition, side effects—in a symptom journal and fed it all into Claude, an AI chatbot. When his final PET scan came back ambiguous, the AI f...