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Bryan Johnson Confirms Autoimmune Gastritis and Plans Experimental Immune Work

The diagnosis highlights a condition doctors say cannot be cured with approved treatments and raises questions about high‑resource, unproven interventions.

Overview

  • Johnson announced that stomach biopsies and blood tests diagnosed autoimmune gastritis after years of unexplained low ferritin despite supplements and no clear symptoms.
  • Medical experts stress there is no approved cure for autoimmune gastritis and standard care focuses on replacing iron and vitamin B12 and monitoring the stomach for complications including a small long‑term cancer risk.
  • Johnson reported a quick rise in ferritin after a 1,000 mg IV iron infusion he received earlier in July and said he will get repeat biopsies as part of further evaluation.
  • He plans deep immune profiling and other investigational approaches to identify immune pathways driving his disease, but clinicians describe those strategies as early, largely preclinical and unproven.
  • Johnson said much of the online reaction was celebratory, claiming about 1,900 articles and widespread schadenfreude, a response that has renewed debate over the ethics and public perception of wealthy individuals pursuing experimental longevity medicine.