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Rachel V Thomas

Bryan Johnson Blames Sugary Cereals, Soda and Stress for His Autoimmune Disease; Shares Treatment Plan

Longevity expert and millionaire Bryan Johnson has revealed that he has been diagnosed with autoimmune gastritis (AIG), a condition in which the immune system attacks the stomach lining.

In a post on X, Johnson, known for his radical experiments, including receiving blood transfusions from his teenage son, said he believes years of eating sugary cereals, drinking soda, consuming fast food and experiencing chronic stress contributed to the development of his autoimmune conditions.

Calling it a "bad news", the millionaire said: "I have an autoimmune disease. My stomach is eating itself". He added that "2–5% of people have this, too. Likely more, because it hides".

“As a kid, I ate sugar cereal, drank sugary soda, and gobbled down fast food. I had a few healthy years in my early 20s, but then became a young father of three and began building a business. Juggling that stress and grind, I let my health slip and gained 40 lbs,” he wrote.

He added that he later developed chronic depression and believes that during this period, his body began an autoimmune process affecting both his thyroid and stomach lining.

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<h2>Diagnosed With Hypothyroidism At 21</h2>

Johnson said he was diagnosed with hypothyroidism at the age of 21 during a routine blood test. He has since managed the condition with levothyroxine and Armour Thyroid.

“They are the hormones my body should be producing on its own, but wasn’t. By taking these pills daily, my body was able to operate as though my thyroid was functioning properly.”

He said his stomach had also begun attacking itself, but the condition went undetected because he had no symptoms. It was only discovered in May.

Johnson noted that autoimmune gastritis can cause irreversible damage, including nutritional deficiencies, anemia, and an increased long-term risk of stomach cancer.

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Johnson said he had persistently low ferritin levels for the past 11 years despite not having anemia.

“We continually tried to raise my iron levels with food and supplementation, but nothing would work.”

He said he followed a plant-based diet, trained intensely, used a sauna and hyperbaric oxygen therapy, and took iron supplements, but his iron levels remained low.

A colonoscopy ruled out slow gastrointestinal bleeding, while an upper endoscopy with five stomach biopsies revealed early autoimmune gastritis. The biopsies showed early atrophy confined to the stomach's acid-producing lining, while 

the rest of the stomach remained unaffected.

“So this was never one problem. It was three, linked to one another: the iron deficiency, the autoimmune gastritis driving it, and the autoimmune thyroid disease alongside it.”

Johnson said he has undergone a large blood draw to sequence more than one million individual immune cells.

You Live In A Body That Can Heal Itself: Barbara O'Neill

According to him, the goal is to identify the specific immune cell clones attacking his stomach lining. He compared immune cells to soldiers carrying unique "keys," explaining that the advanced sequencing technology can identify the rogue immune cells responsible for autoimmune gastritis.

Johnson said that once those immune cells are identified, the findings will help determine the most appropriate therapy to target and suppress the autoimmune attack.

Autoimmune gastritis (AIG) is a long-term autoimmune disorder in which the body's immune system mistakenly attacks the stomach's parietal cells, which produce stomach acid, as well as intrinsic factor, a protein essential for absorbing vitamin B12. Over time, this damages the stomach lining and reduces the body's ability to absorb iron and vitamin B12, increasing the risk of nutrient deficiencies.

In many people, symptoms are caused more by these nutritional deficiencies than by inflammation of the stomach itself. 

<ul><li>Ongoing fatigue and weakness</li><li>Low iron levels or iron-deficiency anemia</li><li>Vitamin B12 deficiency, which may lead to numbness, tingling, balance problems or memory difficulties</li><li>Pale skin and shortness of breath</li><li>Reduced appetite, bloating, nausea or discomfort in the upper abdomen</li><li>Mouth ulcers.</li></ul>

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Bryan Johnson

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Bryan Johnson Treatment Plan

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Autoimmune Disease

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Longevity expert and millionaire Bryan Johnson has revealed that he has been diagnosed with autoimmune gastritis (AIG), a condition in which the immune system attacks the stomach lining.In a post on X, Johnson, known for his radical experiments, including receiving blood transfusions from his teenage son, said he believes years of eating sugary cereals, drinking soda, consuming fast food and experiencing chronic stress contributed to the development of his autoimmune conditions.Calling it a "bad news", the millionaire said: "I have an autoimmune disease. My stomach is eating itself". He added that "2–5% of people have this, too. Likely more, because it hides". “As a kid, I ate sugar cereal, drank sugary soda, and gobbled down fast food. I had a few healthy years in my early 20s, but then became a young father of three and began building a business. Juggling that stress and grind, I let my health slip and gained 40 lbs,” he wrote.He added that he later developed chronic depression and believes that during this period, his body began an autoimmune process affecting both his thyroid and stomach lining.Also read: Donald Trump Posts AI Video of Himself Treating Critics for 'Derangement Syndrome' Diagnosed With Hypothyroidism At 21Johnson said he was diagnosed with hypothyroidism at the age of 21 during a routine blood test. He has since managed the condition with levothyroxine and Armour Thyroid.“They are the hormones my body should be producing on its own, but wasn’t. By taking these pills daily, my body was able to operate as though my thyroid was functioning properly.”He said his stomach had also begun attacking itself, but the condition went undetected because he had no symptoms. It was only discovered in May.Johnson noted that autoimmune gastritis can cause irreversible damage, including nutritional deficiencies, anemia, and an increased long-term risk of stomach cancer.Early SignsRead More: Why Fentanyl Addiction Treatments Are Losing Effectiveness, Study FindsJohnson said he had persistently low ferritin levels for the past 11 years despite not having anemia.“We continually tried to raise my iron levels with food and supplementation, but nothing would work.”He said he followed a plant-based diet, trained intensely, used a sauna and hyperbaric oxygen therapy, and took iron supplements, but his iron levels remained low.A colonoscopy ruled out slow gastrointestinal bleeding, while an upper endoscopy with five stomach biopsies revealed early autoimmune gastritis. The biopsies showed early atrophy confined to the stomach's acid-producing lining, while the rest of the stomach remained unaffected.“So this was never one problem. It was three, linked to one another: the iron deficiency, the autoimmune gastritis driving it, and the autoimmune thyroid disease alongside it.”Bryan Johnson's Treatment PlanJohnson said he has undergone a large blood draw to sequence more than one million individual immune cells.   According to him, the goal is to identify the specific immune cell clones attacking his stomach lining. He compared immune cells to soldiers carrying unique "keys," explaining that the advanced sequencing technology can identify the rogue immune cells responsible for autoimmune gastritis.Johnson said that once those immune cells are identified, the findings will help determine the most appropriate therapy to target and suppress the autoimmune attack.What Is Autoimmune Gastritis?Autoimmune gastritis (AIG) is a long-term autoimmune disorder in which the body's immune system mistakenly attacks the stomach's parietal cells, which produce stomach acid, as well as intrinsic factor, a protein essential for absorbing vitamin B12. Over time, this damages the stomach lining and reduces the body's ability to absorb iron and vitamin B12, increasing the risk of nutrient deficiencies.In many people, symptoms are caused more by these nutritional deficiencies than by inflammation of the stomach itself. Common symptoms include:Ongoing fatigue and weaknessLow iron levels or iron-deficiency anemiaVitamin B12 deficiency, which may lead to numbness, tingling, balance problems or memory difficultiesPale skin and shortness of breathReduced appetite, bloating, nausea or discomfort in the upper abdomenMouth ulcers.

bryan johnson blames sugary cereals, soda and stress for his autoimmune disease; shares treatment plan

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