
The Limits of Longevity: Autoimmune Gastritis Strikes a Meticulously Tracked Life
Bryan Johnson, a prominent longevity advocate who tracks nearly every aspect of his biology, revealed he has autoimmune gastritis, a chronic condition that damages the stomach lining and can progress silently over years. Experts note autoimmune diseases are common, often with unknown causes, and while they can be managed, they aren’t curable. Johnson’s case illustrates both the promise and the limits of intensive data-driven health monitoring and single-subject experiments, showing that even exhaustive biomarker data may miss slow-developing illnesses.













