'Don't Die' Guy Bryan Johnson Says He Has Serious Autoimmune Disease

Key Points:

• Bryan Johnson, a 48-year-old life extension advocate, revealed he has Autoimmune Gastritis (AIG), an incurable disease causing B12 and iron deficiency, which he only discovered in May and attributes partly to unhealthy habits and stress in his youth.
• Johnson, known for his extreme health optimization efforts and founder of Blueprint, plans to pursue experimental treatments for AIG and has invited researchers working on the disease to contact him.
• Despite criticism for his unconventional health practices—such as tracking intimate personal metrics and using blood transfusions from his son—Johnson remains optimistic about overcoming incurable diseases through advanced technology like AI and multiomics.
• Johnson’s history includes founding Braintree, which sold Venmo to PayPal for $800 million, and he has spent millions on products and interventions aimed at extending lifespan, as documented in the 2024 Netflix film "Don’t Die: The Man Who Wants to Live Forever."
• He acknowledges the skepticism he faces but insists his rigorous health regimen has prevented more severe consequences and reinforces his belief that modern science can eventually cure conditions once deemed incurable.