Biohacker Bryan Johnson battles incurable autoimmune gastritis on quest to beat death

Bryan Johnson, the 48-year-old tech entrepreneur known for extreme health experiments, revealed he has autoimmune gastritis, an incurable autoimmune disease that attacks his stomach lining. He says the condition likely stems from years of fast food and sugary drinks before his biohacking regimen and plans to keep monitoring ferritin and iron levels, undergo repeated biopsies, and pursue new treatments with AI and biotech as part of his “don’t die” quest to extend healthspan.