Biohacker Bryan Johnson Spent Millions Trying to Live Forever. His Stomach Was Still Eating Itself.

Key Points:

• Bryan Johnson, founder of Blueprint and the $1 million-per-year Immortals longevity program, revealed in 2026 that he has autoimmune gastritis (AIG), a chronic condition destroying his stomach lining despite extensive health monitoring over 11 years.
• AIG causes the immune system to attack stomach cells responsible for iron and B12 absorption, leading to risks like anemia, nerve damage, and gastric cancer; Johnson's only early indicator was unexplained low ferritin levels consistently flagged but not fully diagnosed.
• Despite following rigorous lifestyle protocols and having a large medical team, Johnson's condition went undetected for over a decade, highlighting limitations in current health tracking and diagnostic approaches.
• Johnson is actively exploring advanced experimental treatments, including JAK inhibitors, IL-17 blockade, CAR-T cell therapies, and AI-designed antibodies, refusing to accept AIG as incurable.
• His case raises critical questions about the effectiveness of quantified self-tracking in detecting slow, silent diseases and underscores the need for deeper understanding beyond routine data and wearable devices.