Bryan Johnson is a tech entrepreneur best known for Project Blueprint, an intensive, metrics-driven program he says can slow biological aging. He recently revealed a diagnosis of autoimmune gastritis and controversially claimed to have cloned himself to test therapies and grow organs. Medical experts say autoimmune gastritis is uncommon, raises stomach cancer risk and can cause B12 deficiency, but it is manageable with standard medical care, diet and supplements. Johnson spends millions annually on the program and his company, BluePrint, has raised significant funding to expand access.
Who Is Bryan Johnson? Inside Project Blueprint, His Anti‑Aging Regimen and Controversial Clone Claim

Bryan Johnson, a tech entrepreneur turned self-styled "longevity guru," has drawn global attention for Project Blueprint, an intensive, data-driven regimen he says can slow biological aging. Recently Johnson disclosed a diagnosis of autoimmune gastritis and sparked debate by saying he had cloned himself to test therapies and grow organs for transplantation.
Diagnosis and the Cloning Claim
In early July, Johnson announced he had been diagnosed with autoimmune gastritis, a condition in which the immune system attacks the stomach's acid-producing cells. He linked the diagnosis to years of dietary choices and the stress of family life. On social media he wrote, "I just cloned myself … as a newborn," explaining that he sees a clone as a potential source for testing therapies, growing transplantable organs and harvesting young cells.
Note: Human reproductive and therapeutic cloning raise major ethical, legal and technical challenges. Johnson's social posts describe an intention that is provocative and unproven in mainstream medical practice.
What Is Autoimmune Gastritis?
Autoimmune gastritis affects fewer than 5% of people worldwide. It is not typically immediately fatal but does increase the risk of stomach cancer and can cause vitamin B12 deficiency, which may lead to anemia and neurological complications. Johnson has a prior history of autoimmune hypothyroidism (diagnosed at age 21) and has said he lived for more than a decade with persistently low ferritin, a marker of iron stores that can reflect chronic gastric issues.
Medical Perspective
Gastroenterologist Dr. Neil Parikh, speaking to Yahoo, noted that autoimmune gastritis can often be managed with diet adjustments and vitamin supplementation. Restoring iron and B12 levels commonly involves oral iron and B12 supplements or other standard medical therapies depending on severity. Experts emphasize that while lifestyle and nutrition matter, medical follow-up and evidence-based treatments are essential.
Project Blueprint: Goals, Pillars and Results
Johnson launched Project Blueprint in 2021 as a highly measured effort to reduce biological age. He framed it as a "Don't Die Protocol" focused on five pillars: sleep, diet, exercise, community and restraint. According to metrics Johnson has shared publicly, his skin-age measurements and other biomarkers improved markedly during the program — for example, earlier skin-age estimates placed him at 64, while later tests reportedly placed him between 37 and 42. He also cites a calculated aging pace of 0.64 on a metric he uses, which he says is slower than 99% of 20-year-olds on that scale.
Costs, Business and Funding
Johnson invests heavily in Project Blueprint. He has said he spends more than $2 million per year on procedures, supplements and monitoring. He also converted his home into a dedicated Blueprint clinic at a reported cost exceeding $6.8 million. Financial reports cited by third-party outlets estimate Johnson's net worth at about $200 million (Hampton Blog, Feb. 2025). His company, BluePrint, markets wellness products and — according to reports — raised $60 million in October 2025 from celebrity and technology investors to expand access to his protocols and measurement tools.
Controversy and Public Reaction
Johnson's mix of bold personal experimentation, large personal spending, unconventional medical claims and public statements about cloning have generated fascination and skepticism alike. Supporters find his rigorous measurement approach and transparency compelling; critics warn that celebrity-driven medical claims can mislead the public and that some ideas he promotes are ethically or scientifically unproven.
Bottom Line
Johnson remains a polarizing figure: a wealthy entrepreneur using his resources to pursue extreme health optimization while raising questions about feasibility, ethics and the limits of individual-led biomedical experimentation. Anyone concerned about autoimmune gastritis or similar conditions should seek care from licensed medical professionals and consider evidence-based therapies alongside lifestyle measures.
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