Bryan Johnson’s Autoimmune Disease Revelation
Bryan Johnson, known for his pursuit of extending life and lowering his “biological age,” has announced that he has autoimmune gastritis (AIG), a condition he discovered only this past May. He shared his situation on social media, expressing uncertainty about how long he’s actually been dealing with AIG. This disease leads to deficiencies in B12 and iron, which can result in anemia. Johnson is determined to explore “experimental approaches” for a cure and has invited others working on similar issues to connect with him.
The 48-year-old, who actively documents his health journey online, attributes his AIG diagnosis partly to the unhealthy eating habits of his youth, as well as the stress of being a father. Reflecting on his childhood, Johnson mentioned consuming sugary cereals, sodas, and fast food. After a brief period of healthier choices in his early twenties, his priorities shifted when he became a young father of three and started a business.
He elaborated, saying, “Trying to balance that stress and the hustle, I let my health slide and gained 40 pounds. It didn’t take long for me to fall into a deep, chronic depression. At some point during that time, my body began an autoimmune process that affected both my thyroid and stomach lining.”
Bad news #1:
I have an autoimmune disease. My stomach is eating itself.
Bad news #2:
2–5% of people have this, too. Likely more, because it hides.
Good news:
I’m going to try and solve it. Will share all.
As a kid, I ate sugar cereal, drank sugary soda, and gobbled down… pic.twitter.com/EbJ8a916uS
— Bryan Johnson (@bryan_johnson) June 30, 2026
Johnson follows a rigorous health regimen, taking numerous supplements daily. He was featured in a Netflix documentary titled Don’t Die: The Man Who Wants to Live Forever. He previously founded Braintree, which acquired Venmo before being sold to PayPal for $800 million.
His current venture, Blueprint, sells various products he claims can help extend life, from dietary supplements to olive oil. Despite investing millions in his quest for longevity, many criticize his obsession, suggesting it detracts from experiencing a fulfilling life. Yet, Johnson stands firm in believing that his recent diagnosis validates his perspective on health and longevity.
“It’s interesting how some of you challenge me to “live life” in ways that might be labeled as self-destructive. I can take the teasing. But really, had I not focused on my health in the past five years, my condition might be far worse,” he noted.
This teasing often manifests online, particularly regarding some of his more peculiar tweets. One example includes tracking the nighttime erections of his 19-year-old son, which he awkwardly framed as a lesson on standing tall and being firm.
Nighttime erection data from my 19-year-old son, @talmagejohnson_, and me. His duration is two minutes longer than mine.
Raise children to stand tall, be firm, and be upright. pic.twitter.com/ruIYyPMrUC
— Bryan Johnson (@bryan_johnson) January 22, 2025
Additionally, Johnson has invested significantly in blood transfusions from his son, an approach linked to potential serious illnesses. He’s also monitoring microplastic levels in his semen, data that many would find unusual.
Nevertheless, Johnson isn’t a typical individual. His goal is to reverse aging, and he’s willing to try nearly anything to achieve that, even if it seems out of reach. He remains optimistic, believing advancements in technology could one day conquer mortality.
“In this era of AI and custom-built biological components, no illness should be deemed incurable simply due to a lack of past attempts at a solution,” Johnson stated.
Currently, Johnson’s company Blueprint has not responded to inquiries made via email. Any updates will be provided as they come in.
