What everyone got wrong about biohacker Bryan Johnson’s viral diagnosis: Medical expert weighs in

A Columbia University gastroenterologist comments on the health influencer’s autoimmune disease, and why his vegan diet isn’t to blame.

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Last week, biohacker Bryan Johnson shook the internet with a viral announcement: He’d been diagnosed with autoimmune gastritis, or AIG.

“My stomach is eating itself,” Johnson wrote at the start of a lengthy social media post. The condition, he........

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