Silicon Valley's Longevity Biohackers Are Engaged In A Dangerous Experiment

In 2019, entrepreneur Bryan Johnson began to research connected himself by taking regular injections of rapamycin. This immunosuppressant supplier is typically utilized to forestall organ rejection aft transplants, but nan 48-year-old exertion entrepreneur and task capitalist had a different extremity — to widen his life.

He tested respective protocols, experimenting pinch weekly, biweekly and different schedules. He tried 5-milligram doses arsenic good arsenic 6-mg and 10-mg ones. But successful September 2024, Johnson decided to extremity his individual proceedings pinch rapamycin: nan benefits didn’t outweigh nan drawbacks, which Johnson outlined in a station connected social-media level X. He had intermittent tegument infections, precocious glucose levels and abnormalities successful his humor lipid levels, positive a heightened resting bosom rate. “With nary different underlying causes identified, we suspected Rapamycin, and since dosage adjustments had nary effect, we decided to discontinue it entirely,” he wrote.

Johnson, who sold his mobile-payment business Braintree to financial-technology patient PayPal successful 2013 for US$800 million, often tinkers pinch his regular regimen of drugs, peptides successful nan shape of some supplements and injections and different aesculapian interventions successful pursuit of a longer life. He’s portion of a increasing crowd of tech entrepreneurs who are seeking other years by hacking their ain bodies — and sharing their exploits wide done societal media and different channels.

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Johnson’s Blueprint protocol — a self-published guideline to his life changes and aesculapian choices — has been adapted complete time. He and his squad told Nature that “the caller attraction of our protocol is to tackle chronic conditions that existent medicine accepts arsenic manageable but not treatable, and to render them treatable done precocious diagnostics and next-generation personalized therapeutics”.

As pinch Johnson and rapamycin, it’s not uncommon for these biohacking influencers to abruptly extremity utilizing a merchandise that they antecedently thought would thief them to widen their lives. For years, supplements called exogenous ketones — which raise ketone levels successful nan blood, little humor glucose and supposedly amended cognition — were wide embraced successful Silicon Valley circles. The compounds were sold arsenic a premium cognition assistance and a stimulant for executives.

In March, however, entrepreneur Tim Ferriss and task capitalist Kevin Rose used their celebrated podcast to pass listeners astir taking supplements that incorporate a compound called 1,3-butanediol. Emerging information from animal models, said Ferriss, bespeak that it mightiness springiness mice a information akin to fatty liver disease. “Treat it for illustration ethanol,” he warned, “like you’re drinking moonshine and you wouldn’t want to do that each day.” The animal findings person not been confirmed successful quality studies, and immoderate manufacturers conflict nan characterization.

This supplement joins a agelong database of life-extension tricks that tech leaders person latched onto contempt questions astir their effectiveness and safety. In 2019 and again successful 2024, the US Food and Drug Administration (FDA) warned against ‘young plasma’ infusions, successful which group person blood transfusions from young individuals. These infusions are being promoted arsenic an anti-ageing therapy — and are thing that Johnson regularly incorporates into his wellness regimen, courtesy of his son.

Tech entrepreneur and billionaire Peter Thiel told Bloomberg News successful 2014 that he takes quality maturation hormone successful hopes of surviving for 120 years, contempt nan Mayo Clinic, a renowned US aesculapian centre, warning of important risks and saying that location is small grounds that nan supplier helps patient adults to regain younker aliases energy. Thiel did not respond to Nature’s questions astir whether he still takes nan hormone aliases what he makes of nan Mayo Clinic’s guidance.

In hopes of enhancing cognition, immoderate Silicon Valley tech leaders person touted methylene blue, a compound pinch a agelong history arsenic a textile dye that has been approved for constricted aesculapian use, chiefly to dainty a uncommon humor disorder. And they are promoting nicotine pouches — marketed arsenic an replacement to smoking — arsenic a measurement to optimize attraction and energy, contempt well-documented concerns astir addiction.

These able longevity evangelists are often seen arsenic translators of early-stage subject to nan public, who move preliminary aliases anecdotal findings into alleged stacks that harvester supplements, different compounds, protocols and therapies, agelong earlier FDA approval. “It’s a trickle-down effect owed to nan quality of platforms they usage to dispersed their content,” says Margje Camps, a interrogator astatine nan University of Utrecht successful nan Netherlands who studies wellness influencers.

But location is simply a threat to this increasing phenomenon: researchers who study ageing and longevity pass that these biohacks person not been clinically tested, meaning that it’s unclear whether they activity aliases mightiness harm people.

There is nary aesculapian involution that is proven to widen quality life by targeting ageing itself, says Andrew Steele, an independent longevity interrogator based successful Berlin and writer of nan book Ageless (2022). “There astir apt are things connected our radars that mightiness work, but thing has ever been tried successful humans.”

Biological basis

Nir Barzilai, president of nan Academy of Geroscience and a genetics interrogator astatine Albert Einstein College of Medicine successful New York City, is torn astir nan impacts that nan biohackers have. Take Johnson’s tinkering pinch various supplements and drugs, which is usually based connected immoderate benignant of evidence: “If you’re asking, ‘Is he taking thing that doesn’t make sense?’ I would say, no, these things are based connected biology but not connected objective evidence,” says Barzilai.

Neither Steele nor Barzilai are cynics. Both opportunity that immoderate of nan protocols being tested and touted by Silicon Valley elites could person a meaningful effect connected lifespan and healthspan — nan clip during which group are not affected by chronic illness and disabilities related to ageing. But nan grounds isn’t location yet.

That spread is what concerns researchers most. Matt Kaeberlein, a biogerontologist who founded nan Healthy Aging and Longevity Research Institute astatine nan University of Washington successful Seattle, calls it “a signal-to-noise problem”.

In nan constricted disposable information astir these interventions, he says, “there’s awesome there, but there’s a full batch of noise”. That makes it difficult for nan nationalist to abstracted nan two.

Faye Mythen, an entrepreneur and laminitis of Reborne Longevity, a preventative-medicine and longevity session successful London, calls tinkerers pinch outsized social-media followings a “shadow shape two” problem, referring to nan regulated mediate shape of pharmaceutical supplier trials. “You person each of these tech founders and celebrated group pinch tons of costs moving protector experimentations connected themselves, and past it goes consecutive to nan population,” she says. “Those protocols go a benignant of accepted reference point, which they are not. You request to tally objective tests connected thousands and thousands of people, pinch very cautiously controlled reference points, to person acceptable data.”

Mythen’s institution typically analyses clients’ biomarkers, cellular biology and genetics to foretell early risks and past offers tailored treatments to thief group to forestall imaginable issues. But she says that her clients now routinely get astatine nan session citing Johnson and his Blueprint protocol.

“People inquire for ‘the Blueprint,’ aliases for a circumstantial molecule by name, earlier they person had a azygous biomarker measured,” says Mythen.

Other researchers that Nature said to study akin experiences: Steele says that his wife, a expert pinch an liking successful longevity, gave a talk successful Munich, Germany. “The first mobility she sewage was astir Bryan Johnson.”

Evidence from trials

It is not caller for influencers to tout wellness products: billionaire entrepreneur Kim Kardashian, for example, has promoted a scope of detox teas and red-light therapy complete nan years. But nan astir caller harvest of ‘tech bro’ (all those Nature analysed were men) life hackers connection thing different because they clasp technological specifications — some successful their decisions and successful really they publicize their choices. By referencing nerdy concepts specified arsenic lipid panels, mTOR inhibitor dose volumes and biologic ages, they usage technological terminology to beforehand interventions moreover though definitive investigation is lacking — a favoritism astir group mightiness not make.

“It’s go normal for group to presume that they request a supplement,” says Camps. “That’s go a regular thing. ‘Everyone is utilizing them, surely I request one.’” Some influencers successful nan longevity abstraction besides waste supplements nether their ain marque names connected their websites and done their social-media platforms, meaning that they person commercialized interests successful nan products they discuss, a narration that mightiness not ever beryllium evident to followers.

Of nan subject that does beryllium regarding longevity products, very small activity was done successful humans. Take rapamycin, which Johnson has stopped using, but others online are still discussing. Research has shown that nan immunosuppressant could widen nan lifespan of mice by betwixt 23% and 60% by inhibiting nan mTOR pathway, a cascade of chemic reactions that regulates compartment maturation and is implicated successful ageing. That study and others show perchance lifespan-enhancing results. “It useful successful each animal wherever it’s ever been tested,” according to Kaeberlein. However, it is much difficult to show lifespan hold successful humans because of nan timescales progressive and risks associated pinch narcotics specified arsenic rapamycin.

When asked whether location was immoderate grounds for mTOR inhibitors having wellness benefits aliases life-extending properties successful people, researchers who said to Nature often cited a study published much than a decade ago, successful 2014. It tested a rapamycin analogue called everolimus and recovered that nan supplier improved responses to vaccination against influenza successful much than 200 adults aged 65 years and older. A follow-up shape II proceedings successful 2018 recovered that nan supplier reduced respiratory-tract infections successful older individuals complete 1 year. In 2023, Kaeberlein and his squad reported connected study results of 333 group who had taken rapamycin off-label, mostly for anti-ageing purposes. The researchers recovered that “rapamycin users mostly reported perceived improvements successful value of life”. But nan squad says that nan study is constricted because it relied connected self-reports and nan scientists can’t norm retired nan anticipation that nan study lacked practice from group who knowledgeable antagonistic effects and stopped taking nan drug.

Another root of grounds for longevity effects successful group comes from narcotics that person already been fixed regulatory support for usage successful chronic conditions that person links to ageing, says Barzilai. He points to 4 FDA-approved narcotics aliases supplier classes that he says person reasonable grounds of slowing age-related diseases. He’s astir excited astir metformin — a cheap, decades-old glucosuria supplier that he and colleagues are presently testing for its expertise to hold nan improvement aliases progression of age-related chronic diseases successful a proceedings called TAME. Another is nan people of weight-loss narcotics known arsenic GLP-1 receptor agonists — specified arsenic Ozempic — that look to impact ageing hallmarks independently of weight loss. The past 2 supplier classes are SGLT2 inhibitors, which compel nan assemblage to excrete much glucose done urine than usual, and that look to person cardiovascular and kidney benefits; and bisphosphonates, which amended bony health.

Despite this promise, Barzilai, for illustration different gerontologists, fears that anecdotal accounts by a fewer rich | and celebrated tech titans could do much harm than good. “Science is not connected n = 1,” says Barzilai.

Johnson and his Blueprint subject squad told Nature that though randomized power tests stay nan golden modular for evaluating azygous therapies aliases interventions, “we respect n-of-1 measurement arsenic nan adjacent frontier”. These single-person assessments alteration more-detailed measurements than are applicable successful a objective trial. “We person already generated signals that dishonesty beyond nan published lit and represent first-in-human observations,” they say.

Funding for ample tests to trial anti-ageing interventions successful humans could beryllium wrong immoderate influencers’ reach, but whether they would take to walk their money successful that measurement is simply a abstracted question. A decently powered rapamycin proceedings successful patient adults would costs successful nan region of $50 million–$100 million, estimates Steele — a insignificant fraction of nan nett worthy of immoderate of nan highly able group astatine nan vanguard of nan longevity segment connected societal media. “It’s simultaneously a wellness fad and perchance nan top gyration successful nan history of medicine,” he says. “And I haven’t yet worked retired a measurement to return that multibillion-dollar excitement and redirect it into existent science.”

As for nan social-media whispers of nan latest shortcuts, “it gives group a emotion of control”, says David Gems, interrogator successful biogerontology astatine University College London’s Institute of Healthy Ageing who has been moving successful nan section since nan early 1990s. “It’s hubris from tech-bro people. They deliberation that because they’ve had truthful overmuch success, they could hit ageing.”

This article is reproduced pinch support and was first published connected June 16, 2026.