Bryan Johnson has built a global reputation by spending millions to extend his lifespan. Now, the tech entrepreneur says he has been diagnosed with an incurable autoimmune disease—a setback that even his intensive longevity programme could not prevent.
Tech entrepreneur and popular biohacker Bryan Johnson has revealed that he has been diagnosed with autoimmune gastritis (AIG), a chronic disease in which the immune system attacks the stomach lining.
Johnson, 48, is widely known for spending millions of dollars each year on his longevity programme, which includes strict nutrition, exercise, advanced medical testing and experimental treatments designed to slow ageing.
He shared the diagnosis in a post on Instagram. “My stomach is eating itself,” Johnson wrote while explaining the condition.
According to Johnson, doctors diagnosed the illness after years of unexplained low iron stores and extensive medical testing. A biopsy confirmed early-stage autoimmune gastritis. The condition damages the stomach’s acid-producing cells, making it harder for the body to absorb nutrients such as iron and vitamin B12. It can also increase the long-term risk of stomach cancer.
Johnson believes the disease developed long before he began his famous anti-ageing routine. He reflected on years of unhealthy eating, chronic stress and depression earlier in life, saying those experiences may have contributed to the autoimmune process that later affected both his thyroid and stomach.
Despite the diagnosis, Johnson has not abandoned his mission. He says current medical practice focuses on managing autoimmune gastritis rather than curing it. He wants to explore new approaches using artificial intelligence, personalised proteins and other emerging technologies.
“Current medical standards treat AIG as something to be managed, not resolved. We want to change that,” he said. Medical experts urge caution. Specialists note that autoimmune gastritis currently has no proven cure. Most patients manage the condition through regular monitoring, vitamin B12 replacement, iron treatment and screening for possible complications.
Johnson’s diagnosis has attracted global attention because of his highly publicised longevity project. His Blueprint programme tracks hundreds of biological markers while a team of doctors monitors nearly every aspect of his health. The goal is to slow biological ageing and extend healthy lifespan.
The diagnosis also highlights a broader reality. Even the world’s most closely monitored health routine cannot eliminate every medical risk. Genetics, environmental factors and immune disorders often develop silently over many years. Johnson says he plans to document his search for better treatments and share the results publicly.
Whether that effort leads to a breakthrough remains uncertain. His story, however, offers an important reminder.
The pursuit of a longer life is not only about delaying ageing. It is also about confronting the illnesses that modern medicine has yet to fully understand.
