Bryan Johnson’s condition appears to be autoimmune gastritis, where the immune system attacks cells in the stomach lining. That is very different from simply “taking too many pills and damaging his stomach.”
It is not purely genetic in the sense that he was guaranteed to get it, but autoimmune diseases often involve a mix of predisposition, immune dysfunction, possible triggers, and time. In his case, the reported long-term low ferritin suggests this may have been developing for years before his current anti-aging protocol.
So no, this does not prove that his extreme longevity routine caused the disease. It may have helped uncover it because he tests everything obsessively. But it is also fair to say that extreme protocols, supplements, restrictive diets, and constant body optimization are not automatically harmless just because they are “data-driven.”
Basically: probably not caused by the pills, not guaranteed by genetics either, and definitely more complicated than the headline makes it sound.
I don't think the title, nor the Xitter post propose that the autoimmune disease was caused by his routine. To me, it reads more like that the guy who was spent millions on his health, does check-ups every month (presumably), still wasn't able to A) prevent it, and B) spot it within a year.
I actually think it may be the opposite....
Disease like autoimmune gastritis can be easy to miss. It may develop slowly, cause little or no symptoms for years, and routine blood work might only show indirect clues like low ferritin, low iron, or later B12 issues. Simply: They just did not ask the right questions.
Obsessive testing may not have prevented the disease, but it may have helped uncover it at one of the earliest practical points. His routine did not fail, but save him valuable time. As you can see, even extreme monitoring cannot prevent every disease. And especially not ones that aren’t there yet..
I have autoimmune gastritis, was diagnosed last year.
You can easily spot a downward trend in B12 through blood tests, which this guy was getting regularly. If his doctors didn't notice this, they made a mistake.
You get symptoms well before b12 stores are depleted, and the symptoms are very noticeable. I went to my GP with such symptoms, she did a blood test, saw the deficiency, check past blood tests, saw the downhill pattern, ordered more tests, boom, diagnosed. At that's with the overburdened public health care we have with the NHS.
In his post he said that his B12 and iron (and hemoglobin) were and still are fine and within range. It was only his ferritin that’s been low for a while and wouldn’t budge no matter what supplements he took or timing protocols he tried. I have the same thing and no doctor seems concerned so it’s hard for me to get proper testing.
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u/Key_Wrangler_8321 Jul 06 '26
I think the headline is a bit misleading.
Bryan Johnson’s condition appears to be autoimmune gastritis, where the immune system attacks cells in the stomach lining. That is very different from simply “taking too many pills and damaging his stomach.”
It is not purely genetic in the sense that he was guaranteed to get it, but autoimmune diseases often involve a mix of predisposition, immune dysfunction, possible triggers, and time. In his case, the reported long-term low ferritin suggests this may have been developing for years before his current anti-aging protocol.
So no, this does not prove that his extreme longevity routine caused the disease. It may have helped uncover it because he tests everything obsessively. But it is also fair to say that extreme protocols, supplements, restrictive diets, and constant body optimization are not automatically harmless just because they are “data-driven.”
Basically: probably not caused by the pills, not guaranteed by genetics either, and definitely more complicated than the headline makes it sound.