Bryan Johnson was diagnosed with autoimmune gastritis, which destroys cells that produce stomach acid. Here's what it's like to live with it.

In a lengthy social media post, Johnson revealed how difficult it was to obtain the diagnosis and pledged to try finding a cure for the disease. 'My stomach is eating itself,' he…

Bryan Johnson has blamed his unhealthy lifestyle in his younger years for developing autoimmune gastritis, but one specialist says it may have been his own doing.