{"id":572386,"date":"2026-07-06T23:47:26","date_gmt":"2026-07-06T23:47:26","guid":{"rendered":"https:\/\/www.europesays.com\/ie\/572386\/"},"modified":"2026-07-06T23:47:26","modified_gmt":"2026-07-06T23:47:26","slug":"how-did-bryan-johnson-develop-an-autoimmune-disease","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ie\/572386\/","title":{"rendered":"How Did Bryan Johnson Develop an Autoimmune Disease?"},"content":{"rendered":"

Longevity influencer Bryan Johnson<\/a> may seem to be the picture of health.\u00a0<\/p>\n

He claims to have spent millions of dollars tracking and streamlining nearly every aspect of his biology so as to radically slow \u2014 and even reverse, he claims \u2014 aging. He\u2019s undeniably fit<\/a>, purports to get more than eight hours of sleep each night and boasts a \u201cfertility age<\/a>\u201d in his early twenties. Johnson is 48.\u00a0<\/p>\n

However, last week, Johnson revealed<\/a> that he has a chronic autoimmune condition, called autoimmune gastritis<\/a>, which causes \u201cirreversible damage\u201d to the lining of the stomach, he said, and often develops silently and asymptomatically over the course of years. He was diagnosed in May, he wrote, after years of persistently low ferritin, a protein that stores iron inside cells, that his team struggled to explain.<\/p>\n

News of his diagnosis comes amid a surge in interest in longevity medicine and therapies<\/a>, a growing area of research that is trailed by just as much public fascination. But how does someone on a quest to live forever, who meticulously tracks everything from sleep quality and sexual potency to heart function and organ health, suddenly discover a chronic disease that had been slowly progressing for years?<\/p>\n

For medical experts and anti-aging researchers, the diagnosis isn\u2019t especially shocking. Autoimmune disorders are quite common, even among apparently healthy and fit individuals, said Dr. Gian Corrado<\/a>, head team physician for Northeastern University athletics.\u00a0<\/p>\n

So named because the immune system mistakenly attacks the body\u2019s own healthy cells and tissues instead of \u201cforeign invaders,\u201d autoimmune diseases encompass more than 100 known conditions<\/a> and can affect many systems throughout the body, experts say.\u00a0<\/p>\n

\u201cFor most autoimmune diseases, the etiology is unknown, although we know that there are environmental and genetic factors that indicate who would have greater susceptibility,\u201d said Emeka Okeke<\/a>, an immunologist and assistant professor of biology at Northeastern University.<\/p>\n

Okeke said Johnson\u2019s illness isn\u2019t fatal, but doesn\u2019t have a cure. It can also increase the long-term risk<\/a> of developing stomach cancer. <\/p>\n

Though many such conditions are incurable, most can be managed through select therapies and lifestyle adjustments, he said. Still, Corrado said that, like \u201cneurodegenerative, cardiovascular and metabolic\u201d illnesses, autoimmune diseases can meaningfully impact a person\u2019s \u201clongevity, wellness and quality of life.\u201d\u00a0<\/p>\n

Autoimmune diseases can also arise \u201cde novo,\u201d or without any known cause, Okeke said. Scientists also suspect that inherited genes and environmental triggers, but also potentially infections, can set the disease process in motion, he said.\u00a0<\/p>\n

\"GianDr. Gian Corrado, Northeastern University\u2019s chief physician, said autoimmune conditions are relatively common. Photo by Alyssa Stone\/Northeastern University<\/p>\n

Those blind spots can leave patients desperate for answers. Many people with autoimmune symptoms, in particular, spend years looking for explanations that primary care screening can\u2019t always provide, Corrado said. That uncertainty has in part fueled interest in longevity medicine and intensive health tracking, he said, even as it has created opportunities for pseudoscientific treatments to flourish.\u00a0<\/p>\n

\u201cI think the frustration with the \u2018autoimmune\u2019 and \u2018neurologic\u2019 has yielded some progress, but they also foster desperation among many patients,\u201d Corrado said.\u00a0<\/p>\n

But it\u2019s the patients whose symptoms defy easy explanation who help drive scientific progress to fill the gaps, Corrado said. Though critics of Johnson\u2019s have taken aim at some his anti-aging protocols<\/a>, Corrado said his larger project is worthwhile in that it is helping draw attention to scientific questions that have received too little attention and funding.<\/p>\n

That effort has coincided with an ongoing revolution in personalized health monitoring. Modern medicine has also made it possible to collect an unprecedented amount of patient-specific health data, with wearable devices, blood tests and advanced imaging offering a detailed picture of a person\u2019s health, experts say.\u00a0<\/p>\n

Johnson is in a unique position to harness those insights: he has spent years conducting what experts describe as a \u201cN-of-1 experiment<\/a>,\u201d or a continuous clinical trial involving one person. Using his own body as a laboratory for an exhaustive regimen of health tracking and anti-aging interventions, Johnson has tried to determine how much of the aging process can be measured, managed and slowed.<\/p>\n

Never before have people been able to collect so much information about their own bodies, yet many diseases still evade detection until they\u2019ve already begun causing damage, said Ram Hariharan<\/a>, data science faculty member and director of programs for the College of Engineering at Northeastern\u2019s Seattle campus. \u201cBryan Johnson is arguably the most measured human alive, and this condition still hid from him for years.\u201d<\/p>\n

Autoimmune diseases typically develop and progress over the course of years and sometimes decades, beginning with \u201csilent immune misfires\u201d before manifesting in clinical symptoms, according to the Global Autoimmune Institute<\/a>, a Virginia-based nonprofit devoted to the study and funding of autoimmune conditions.\u00a0\u00a0<\/p>\n

Although scientists understand how autoimmune diseases damage the body by promoting chronic inflammation, they are still trying to understand why that process begins in many patients, Okeke said.<\/p>\n

Hariharan, who studies anti-aging research, said N-of-1 health tracking is still limited.\u00a0 Most biomarker \u201cinsights,\u201d he said, just point back to the same handful of levers, such as adequate sleep, exercise, diet, stress management and avoidance of smoking and alcohol.\u00a0<\/p>\n

Researchers and patients have become proficient at collecting data, he said, but added that \u201cwe\u2019re not yet in a position to engineer our health.\u201d<\/p>\n

\u201cThe majority of the time, we can only react when a disease shows up,\u201d Hariharan said. \u201cThese experiments with one subject can teach you plenty, but it can\u2019t warn you about the thing it\u2019s never seen before.\u201d<\/p>\n

Tanner Stening is an assistant news editor at Northeastern Global News. Email him at t.stening@northeastern.edu. Follow him on X\/Twitter @tstening90<\/a>.<\/p>\n