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Bryan Johnson, a biohacker and longevity guru who has claimed “we would be the first technology who received’t die,” revealed he has an autoimmune situation inflicting his abdomen to “eat itself.”
The Los Angeles-based tech entrepreneur, 48, has beforehand shared publicly that he’s hoping to stay till the yr 2140, when he would in idea be 160 years previous.
Now, Johnson says he has been recognized with autoimmune gastritis (AIG), a continual autoimmune illness wherein the immune system assaults the abdomen’s acid-producing parietal cells, lowering abdomen acid and impairing vitamin B12 absorption, based on Nature Critiques Illness Primers.
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“My abdomen is consuming itself,” he wrote in an Instagram submit. Johnson additionally shared that anyplace from 2% to five% of individuals seemingly have this illness.
“I’m going to attempt to clear up it,” Johnson went on. “Will share all.”

Bryan Johnson, a biohacker and longevity guru who has claimed “we would be the first technology who received’t die,” revealed he has an autoimmune situation inflicting his abdomen to “eat itself.” (Getty Pictures)
The biohacker shared that as a toddler, he ate sugary cereal, drank sugary soda and “devoured down fast food.”
“I turned a younger father of three and commenced constructing a enterprise,” Johnson went on. “Juggling that stress and grind, I let my well being slip and gained 40 lbs. Inside a couple of years I’d fallen right into a deep, continual despair.”
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“Someplace in that timeline, my physique started creating an autoimmune course of affecting my thyroid after which my abdomen lining,” he added.
Fox Information Digital reached out to Johnson for remark.
AIG can stay hidden and could be difficult to diagnose, Johnson famous, usually surfacing years after injury has already occurred to the abdomen. It will probably trigger iron deficiency, B12 deficiency and anemia, and can even improve the chance of stomach cancer, the professional warned.
“Low iron shops get normalized and barely investigated in any respect when anemia hasn’t proven up but,” Johnson wrote. “That blind spot is what hid mine for a decade.”
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He additionally shared that for 11 years, he has had low ranges of ferritin, a protein that shops iron contained in the physique’s cells. Ferritin releases iron when the physique wants it, helps muscle perform and carries out different important processes.
“We frequently tried to lift my iron ranges with meals and supplementation, however nothing would work,” he stated.

The Los Angeles-based tech entrepreneur, 48, has beforehand shared publicly that he’s hoping to stay till the yr 2140. (Getty Pictures)
Johnson acknowledged that some widespread biohacking methods — together with hard training, sauna and hyperbaric oxygen — all elevate the physique’s demand for iron.
“However none of them defined the core failure: Regardless of me taking iron orally, trailing each formulation and utilizing each timing trick, not one of the iron would stick.”
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Johnson underwent a colonoscopy and higher endoscopy, which examined his total intestinal tract. 5 biopsies have been additionally taken from his abdomen, which discovered “clear indicators of early autoimmune gastritis: early atrophy confined to the acid-producing lining.”
In January 2026, the biohacker said in a submit on his web site that “by 2039, my objective is immortality.”

“Within the age of AI, multiomics, and custom-built DNA, proteins and cells, no situation must be presumed incurable just because nobody has but tried to remedy it with right now’s stack,” Johnson stated in his submit. (Getty Pictures)
He detailed his technique for defying growing old, which incorporates embracing a strict routine to sluggish or cease organic growing old, utilizing AI to speed up longevity research, testing new therapies in lab-grown cells and organs, and reaching “longevity escape velocity” — wherein medical advances would ultimately prolong lifespan sooner than he ages.
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“I could fail at this activity, however my workforce and I’ll attempt our greatest,” he wrote on the time.
There’s at present no remedy for AIG, which Johnson stated he needs to vary.

Johnson acknowledged that some widespread biohacking methods — together with laborious coaching, sauna and hyperbaric oxygen — all elevate the physique’s demand for iron. (iStock)
“Within the age of AI, multiomics, and custom-built DNA, proteins and cells, no situation must be presumed incurable just because nobody has but tried to remedy it with right now’s stack.”
Johnson ended his submit by urging others to prioritize their health.
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“Look after your self, look after others, look after the planet and look after our animal buddies. Look after life, because it’s probably the most treasured reward there may be.”
The longevity guru additionally shared a picture exhibiting the detailed findings of his 5 abdomen biopsies.