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The Longevity Doctor on Brian Johnson’s diagnosis and living longer

The Longevity Doctor on Brian Johnson's diagnosis and living longer

(Photo: Brian Johnson: Hubert Westill/SXSW Conference & Festivals/Getty Images; Uphill Runner: Fond, Magnus/Getty; Design: Ayanna Underwood/Canva)

Published July 8, 2026 03:45 pm

Brian Johnson, the tech millionaire who has spent Reported $2 million per year Trying to reverse my age, announced last week That he has been diagnosed with autoimmune gastritis. He described it with the bravery that has made him famous: “My stomach is eating itself.” He is 48 years old, has said that he hopes to reach 160, and earlier this year he said that his goal 2039 is immortality.

As a doctor, I read the announcement from a unique vantage point. I study longevity science and work as a hospital-based physician, which means I spend part of my week working on how to give people more years and the other part lying at a bedside as the years run out. Johnson’s diagnosis itself is manageable and well-studied. I am interested in the story told by Johnson How He got it, because science says otherwise.

autoimmune gastritis (AIG) is a long-term, progressive disease in which the immune system attacks the stomach cells that make acid. “‘My stomach is eating itself’ is not exactly accurate,” Dr. Supriya RaoBoard-certified gastroenterologist and assistant professor at Tufts University School of Medicine explains Outside. What actually happens is slower and more specific – the immune system attacks the stomach lining, shutting down acid production and the intrinsic factor needed to absorb B12. Over time the layer becomes thin, called atrophy, and it may turn into intestine-type tissue that no longer functions like stomach cells.

Johnson attributes his diagnosis to childhood sugar consumption and a difficult, stressful decade. But the arc moves backwards. She was diagnosed with autoimmune thyroid disease at age 21, a sign that her immune system was ready to turn on itself, and 30 to 40 percent of those patients Show early immunological signs of abdominal involvement. Susceptibility predates diet and stress, to which they are responsible, and subsequent health “adaptations” may or may not alter the trajectory of the disease. He’s assembled one of the most measured, calculated bodies on the planet, and the diagnosis still remained hidden from him for years, but came through somehow. (This high level of control extends beyond their biology, too. Employees have accused them of workplace misconduct, but the NDAs their companies require, reportedly even for romantic partners, keep those accounts private. the new York Times.)

From where I sit, the belief that we can completely control our destiny is a powerful engine that funds real research, so I’m reluctant to dismiss it. But there are limitations that no protocol overrides. There are things we can do on the outer margins, but none of them buy discount, and detailed exploration of any is mostly reserved for those who can afford it. Rao laid out the limits clearly: Strict tracking is “the privilege of the rich” and even for those who can afford it, “paying attention to your body is more valuable than tracking a specific number.”

You don’t need expensive, extreme measures to live a long, healthy life. Here’s what I know works.

The better news is that something that really works is available to almost anyone. However, those methods are unconventional, well-studied, and mostly free, which is why they tend to be overshadowed by everything that isn’t. But it’s my job to remind the public that they to do Still exist and are in effect. Here they are, in no particular order, because they all matter:

  • lifted weight. Building and maintaining muscle protects your metabolism, your bones, your balance, and your independence in the decades when independence becomes the whole game. two or three sessions a week is enough.
  • do your cardio. The aerobic fitness track that helps you live longer and better than anything you can buy. Most days can be easy; Try something hard once or twice a week.
  • Protect your sleep. People with the most expensive protocols often skip it, and this undoes more than any supplement can repair. Get a consistent seven to nine hours of sleep and consider your sleep routine non-negotiable. Fun Facts: sleeping too much Can also be harmful, so try to limit it to nine hours maximum.
  • eat enough fiber. Fiber nourishes the gut, stabilizes blood sugar, and Reduces the risk of diseases that actually shorten life. Most people eat half of what they should. You don’t have to start fibermaxing (which can cause gastrointestinal distress); The recommended daily intake will suffice. The recommended daily intake is 25 to 28 grams of fiber for women and 28 to 34 grams of fiber for men.
  • Manage chronic stress. Not the intense stress of a hard workout, which the body can handle, but the low, unwavering mental and emotional stress that sometimes never resolves. It is measurably corrosive, and the tools to manage it take less time than stress. You can see a therapist, journal, practice meditation, or even tell your friends; All of these can make tough days feel less tough.
  • manage your relationships. strong relationships predict longevity As reliably as anything on this list, and even better, they make the added years worthwhile. Protect friendships and lasting plans, and treat them like medicine.
  • Prioritize preventive care. Visit your doctor at regular intervals (usually annually if you are generally healthy). Continue with your appointments even when nothing seems wrong. Prevention is better than cure every time.

The people I have seen depart this life most peacefully were rarely the people who fought hardest to be here. They were the ones who cared about the body they were given, listened to it, and accepted that this was always the order. The superficial things on this list that require daily investment are actually part of us, and they are enough to make a good life, which has always been the point.


Dr. Ingrid Yang, MD, JD, E-RYT 500, C-IAYTis an internal medicine physician, longevity practitioner, and bestselling author. Before entering the medical field, he practiced law. Dr. Yang is also an integral member of Outside’s Medical Review Board. When she’s not treating patients, you can find her doing yoga, meditating, or traveling.

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