Guide · Biohacking
Bryan Johnson's Blueprint protocol: what has scientific backing and what you can test for free
The entrepreneur who measures hundreds of markers has become a symbol of biohacking. We separate what in the protocol has studies behind it from what is still a bet.
Bryan Johnson is an American entrepreneur who, since 2021, has followed Blueprint, a protocol of sleep, diet, exercise, supplements and frequent measurements, at a reported cost of about US$2 million a year. The protocol's inexpensive pillars are well supported: in a cohort of 123,000 adults, five healthy habits were associated with 12 to 14 more years of life expectancy at age 50 (Li, 2018).
In this article
- Who Bryan Johnson is and what Blueprint is
- What in the protocol has good scientific backing
- Calorie restriction and epigenetic clocks
- What is still a bet: plasma, therapies and dozens of supplements
- The problem with testing everything at once
- How to test it on yourself (N=1)
- Frequently asked questions
- Sources
Who Bryan Johnson is and what Blueprint is
Bryan Johnson is an American tech entrepreneur. He founded Braintree, a payments company sold in 2013, and then began investing in neurotechnology. In 2021 he started the project he calls Blueprint: a protocol in which, according to him, decisions about his own body follow measured data rather than the whim of the moment.
The protocol became famous for its level of detail and its cost. Reports in 2023 described spending of about US$2 million a year, with a team of doctors and researchers tracking hundreds of markers. In 2025 his story became a documentary on a streaming platform. He also launched a movement called Don't Die, which argues for treating ageing as a priority.
Broadly, Blueprint combines:
- sleep at a fixed, early time, with a strict routine before bed;
- a plant-based diet with calorie control and meals concentrated early in the day;
- daily exercise, with strength, aerobic fitness and mobility;
- a long list of supplements and some experimental therapies;
- frequent measurements of blood, imaging, sleep, organ function and epigenetic clocks.
One feature stands out and deserves credit: he openly publishes much of the protocol and the results he measures, which lets others read, discuss and critique it. At the same time, these are results from one person, measured by his own team, and they have not gone through the scrutiny of a clinical trial. That is why it is worth looking at each pillar separately and asking what studies of many people say about it.
What in the protocol has good scientific backing
The most solid part of Blueprint is also the cheapest. Regular sleep, daily movement, real food and not smoking are among the most studied habits in medicine.
- Habits together. In the analysis by Li and colleagues, with about 123,000 American adults followed for up to 34 years, having five healthy habits (not smoking, healthy weight, 30 minutes or more of activity a day, moderate alcohol and a good diet) was associated with 14 more years of life expectancy at 50 for women and 12 years for men, compared with none EV B.
- Sleep regularity. In a UK Biobank study of 60,977 people wearing accelerometers, more regular bed and wake times were associated with more years of life, a stronger signal than sleep duration itself EV B.
- Aerobic fitness and strength. Cardiorespiratory fitness is among the markers most closely linked to a long life, and strength protects independence with age.
In all these cases the data come from cohorts, that is, associations. But they are large, consistent associations with known mechanisms, and many trials show that these habits improve blood pressure, glucose, cholesterol and fitness.
Calorie restriction and epigenetic clocks
Blueprint uses calorie restriction and measures the pace of ageing with epigenetic clocks. Both topics have serious research behind them, and open questions too.
The CALERIE trial randomised 220 adults without obesity to try to eat 25% fewer calories for two years or keep their usual diet. A later analysis, published by Waziry and colleagues in 2023, showed that restriction slightly slowed the pace of ageing measured by DunedinPACE, but did not significantly change other clocks such as PhenoAge and GrimAge EV B. The authors themselves describe the effect as small.
DunedinPACE is a clock created by Belsky and colleagues to estimate the pace of ageing from DNA methylation EV B. Clocks like this are promising research tools, but it is not yet known how much a change in the clock translates into years of healthy life for an individual.
An important caution: eating much less than your body asks for is not suitable for everyone. People with a history of eating disorders, pregnant women, teenagers, frail older adults and people with chronic diseases need professional guidance before any restriction.
What is still a bet: plasma, therapies and dozens of supplements
Some parts of Blueprint are at the frontier of research or outside what the evidence supports today.
Young plasma
In 2023, Johnson received plasma from his teenage son. Months later, he announced he had stopped because he had not detected benefits in his measurements. In 2019 the FDA, the US health agency, had already issued a warning that infusions of plasma from young donors to fight ageing have no proven clinical benefit EV D.
Supplements
The protocol uses dozens of supplements at once. Large trials of popular supplements in people without deficiency, such as vitamin D and omega-3, had null or small results on their main outcomes. Any decision about supplements should be made with your doctor.
Experimental therapies
Johnson has reported undergoing gene therapies and other experimental procedures outside conventional clinical trials. These interventions have no evidence of benefit in healthy people and are not something to copy.
The problem with testing everything at once
Scientifically, Blueprint is an N=1 experiment, with one person and a lot of data. The idea of single-person studies is old and respected: Schork's 2015 paper in Nature argued for so-called one-person trials as part of personalised medicine EV D.
But a good N=1 has rules. The main one is to change one thing at a time, with a baseline and, ideally, on-and-off periods. When dozens of changes happen together, markers may improve and you still cannot tell which change made the difference, or whether one of them got in the way. It is also hard to separate the effect of the protocol from the effect of having a medical team watching every detail.
| Blueprint pillar | Evidence | Cost to start |
|---|---|---|
| Regular, early sleep | B (large cohorts) | Free |
| Daily exercise | A and B (trials and cohorts) | Free |
| Plant-based diet, little ultra-processed food | B (cohorts and marker trials) | Low |
| Calorie restriction | B (small effect on a clock) | Free, with guidance |
| Dozens of supplements | Variable, many null | High |
| Young plasma and gene therapies | D (no proven benefit) | Very high |
How to test it on yourself (N=1)
You do not need millions to use Blueprint's best idea: let the data decide. Start with the cheapest and strongest pillar, regular sleep.
- A 2-week baseline. Note your bedtime and wake time every day, including weekends, and your morning energy on a 1 to 5 scale.
- One change only. For 4 weeks, fix your wake time, with no more than half an hour of variation, including Saturday and Sunday.
- Measure. Keep noting your morning energy, and add your resting heart rate on waking three times a week, at the same time.
- Compare averages. If things improved, keep it, and only then test the next pillar.
Frequently asked questions
How much does Bryan Johnson spend a year?
Reports in 2023 described about US$2 million a year, including the medical team, tests and therapies. The figure varies by source and year.
Does the Blueprint protocol work?
The sleep, exercise and diet pillars have good scientific backing. Other parts, such as dozens of supplements and experimental therapies, have no proven benefit in healthy people.
Does Bryan Johnson still have plasma transfusions from his son?
No. In 2023 he announced he had stopped because he had not detected benefits in his measurements.
Can you do Blueprint without spending much?
Yes, in the parts with the most evidence: a fixed sleep schedule, daily exercise, real food and measuring your progress. Calorie restriction and supplements call for professional guidance.
What is the Don't Die movement?
It is the name Johnson gives to his proposal to treat ageing and long-term health as a personal and social priority.
Sources
- Li Y et al. Impact of Healthy Lifestyle Factors on Life Expectancies in the US Population. Circulation, 2018;138(4):345-355. doi.org/10.1161/CIRCULATIONAHA.117.032047 · Evidence B
- Windred DP et al. Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study. Sleep, 2024;47(1):zsad253. doi.org/10.1093/sleep/zsad253 · Evidence B
- Waziry R et al. Effect of long-term caloric restriction on DNA methylation measures of biological aging in healthy adults from the CALERIE trial. Nature Aging, 2023;3:248-257. doi.org/10.1038/s43587-022-00357-y · Evidence B
- Belsky DW et al. DunedinPACE, a DNA methylation biomarker of the pace of aging. eLife, 2022;11:e73420. doi.org/10.7554/eLife.73420 · Evidence B
- Schork NJ. Personalized medicine: Time for one-person trials. Nature, 2015;520(7549):609-611. doi.org/10.1038/520609a · Evidence D
- U.S. Food and Drug Administration. Important Information about Young Donor Plasma Infusions for Profit, 2019. www.fda.gov/vaccines-blood-biologics/safety-availability-biologics/important-information-about-young-donor-plasma-infusions-profit · Evidence D
- Fortune. Bryan Johnson, tech CEO who spends $2 million a year to be young, 2023 (reportagem). fortune.com/2023/05/23/bryan-johnson-tech-ceo-spends-2-million-year-young-swapping-blood-17-year-old-son-talmage-70-father/ · Evidence D
- Fortune Well. Bryan Johnson plasma exchange results, julho de 2023 (reportagem). fortune.com/well/2023/07/08/bryan-johnson-plasma-exchange-results-anti-aging · Evidence D