What began as Bryan Johnson's pursuit of longevity has become his latest health challenge. The tech entrepreneur, whose Blueprint anti-ageing project and 2023 blood plasma exchange drew worldwide attention, has revealed he was diagnosed with autoimmune gastritis, an incurable autoimmune condition that he described by saying: 'My stomach is eating itself.'
Johnson, 48, said he received the diagnosis in May after years of unexplained low ferritin levels that his medical team struggled to explain despite extensive testing. He used the phrase to describe his immune system attacking healthy cells in his stomach lining.
