Bryan Johnson's health bombshell: Millionaire who spends $2 million a year to live forever now has an incurable disease

Anti-ageing millionaire Bryan Johnson, the tech entrepreneur famous for spending nearly $2 million a year to reverse ageing, has revealed a devastating health battle that even his obsessive wellness routine couldn't prevent. The 48-year-old disclosed that he has been diagnosed with autoimmune gastritis (AIG)—a rare condition in which the body's immune system attacks the stomach lining.

In a candid post on X, Johnson stunned followers by writing: "I have an autoimmune disease. My stomach is eating itself." He warned that the illness often develops silently, affecting an estimated 2-5% of people, and can lead to iron deficiency, anaemia and even an increased risk of stomach cancer if left undetected.

A mystery illness hidden for years

Johnson revealed that the disease had likely been progressing unnoticed for years. Although he was diagnosed with hypothyroidism at the age of 21 and managed it with hormone replacement therapy, another hidden autoimmune disorder was quietly damaging his stomach.



For more than a decade, doctors repeatedly dismissed his persistently low ferritin levels because his haemoglobin remained normal. Despite trying different iron supplements, dietary changes and other interventions, his body's iron stores never recovered.

The test that exposed the real culprit

The breakthrough came after Johnson overhauled his medical team, which ordered a bi-directional endoscopy, blood tests and multiple stomach biopsies.

Blood work showed anti-parietal cell antibodies nearly five times above the normal limit, while stomach biopsies confirmed early-stage autoimmune gastritis. His colonoscopy came back completely normal, ruling out hidden internal bleeding.

According to Johnson, the diagnosis also explained the connection between his thyroid disorder and chronic iron deficiency—a combination doctors refer to as thyrogastric syndrome.

'Medicine says it can't be cured'

Johnson said the diagnosis was particularly difficult because conventional medicine considers autoimmune gastritis an incurable disease that can only be managed rather than reversed.

After receiving a 1,000 mg Monoferric iron infusion, his iron deficiency has been corrected, but he now faces lifelong monitoring for vitamin deficiencies and stomach cancer risk.

Billionaire's mission: Find a cure

Instead of accepting the diagnosis, Johnson says he is assembling researchers to search for a cure. His team plans to monitor disease markers closely while exploring experimental therapies ranging from immune-modulating drugs to advanced T-cell treatments and AI-designed therapies.

He stressed that many of these approaches remain experimental and are not approved treatments.

A warning for everyone

Johnson ended his post with a message that resonated far beyond his own diagnosis.

"The absence of symptoms is not the presence of health," he wrote, urging people not to ignore routine health checks simply because they feel well.

The biohacker, whose extreme longevity experiments have made global headlines, said his latest diagnosis is proof that even the healthiest lifestyles cannot always prevent hidden diseases—but early detection could make all the difference.