Longevity in 2026: Johnson, Attia and What Is Worth Doing

What is actually worth doing for longevity in 2026 is mostly unglamorous and well evidenced: hit the exercise guidelines (at least 150 minutes of moderate activity a week plus strength work on two or more days), protect your sleep, keep up your social life, don't smoke, keep alcohol modest, and use the screening your doctor recommends for your age. Beyond that, the tools of the longevity industry divide into three tiers: sensible add-ons (fitness tracking, sauna), tests with real trade-offs (whole-body MRI, which radiologists do not recommend for people without symptoms or risk factors, and multi-cancer blood tests, whose large NHS trial did not meet its main goal), and experimental drugs (rapamycin, senolytics) that belong in trials and doctors' offices, not shopping baskets. Bryan Johnson and Peter Attia represent the two poles of the debate. This is general information, not medical advice.

Because living to 120 is only a virtue if you are still invited to the right dinner parties.

The age of optimised anxiety

The pursuit of not dying has moved from the fringes of Silicon Valley into the mainstream of the leisure class. Wellness once meant a week at a medical spa followed by a glass of Grüner Veltliner and a feeling of moral superiority. Now dinner conversation turns to VO2 max percentiles and whether anyone has tried rapamycin. The noise is deafening, so it helps to separate the two figures who dominate it from the evidence underneath.

Two poles: the Blueprint and the practice

Bryan Johnson made his fortune when Braintree, the payments company he founded, was acquired by PayPal, then part of eBay, for $800 million in 2013. In October 2021 he announced Project Blueprint, an attempt to slow or reverse his biological ageing through an exhaustive regimen of diet, supplements, measurement and sleep discipline, and he now promotes the philosophy as "Don't Die", the title of his 2023 book and a 2025 Netflix documentary. Whatever you make of it, it is an experiment on one wealthy individual under constant measurement; it is not a study, and its results cannot tell you what would work for you.

Peter Attia, the physician behind the book Outlive: The Science & Art of Longevity, is the patron saint of the pragmatists. His framework, which he calls Medicine 3.0, shifts the focus from treating disease to preventing it decades in advance, aimed at what he calls the four horsemen of chronic disease: atherosclerotic (cardiovascular) disease, cancer, neurodegenerative disease and metabolic disease. His practical prescription is training for a "Centenarian Decathlon": deciding which physical tasks you want to be able to do in your last decade and training for them now.

For most people Attia's approach is the more useful, not because it is gentler but because its core (exercise, strength, sleep, metabolic health, screening) rests on the strongest evidence. The difference between spending your last decade in a chair and spending it on a hill is largely made in your forties and fifties.

What the evidence says is worth doing

Muscle is the new currency

Perhaps the most important shift in the longevity conversation is away from thinness as the marker of health and towards muscle. Age-related loss of muscle mass and strength makes falls more dangerous and everyday tasks harder; strength training is the most reliable defence. Attia's training model has four parts that map neatly onto the official guidance:

1. Steady aerobic work at an intensity where you can still hold a conversation (often called zone 2).
2. Harder intervals that push your aerobic ceiling (VO2 max).
3. Strength with progressively heavier loads, which also supports bone.
4. Stability and balance, through mobility work, Pilates or yoga, so that you do not injure yourself doing the other three.

Rucking (walking with a weighted pack) is a fashionable way to combine the first and third; walking the dog with a rucksack counts.

The tests: what they can and cannot tell you

Wearables. Rings, watches and continuous glucose monitors produce endless data. They are good at revealing patterns (what late drinks do to your sleep, how stress shows in your heart rate) and poor at telling you what to do about them. Treat them as a mirror, not a doctor.

Whole-body MRI. Private whole-body scans are marketed as due diligence. The American College of Radiology's position, stated in April 2023, is that there is not sufficient evidence to justify recommending total-body screening for people without symptoms, risk factors or a family history suggesting disease; its concern is that such scans find numerous non-specific abnormalities that lead to more tests, cost and anxiety without evidence of longer life. Some high-risk groups, such as people with certain inherited cancer syndromes, do have guideline-supported uses. Decide with a doctor, not a brochure.

Multi-cancer early detection blood tests. Galleri is a prescription test that its maker says should be used in addition to, not instead of, routine cancer screening, and it can give both false positives and false negatives. The NHS-Galleri trial, which enrolled more than 142,000 people aged 50 to 77 in England, reported its first results in 2026: there was no difference in the number of people diagnosed with late-stage cancer overall between those who had the test and those who did not, its main goal, although fewer of the most advanced cancers were diagnosed in people screened yearly. The NHS and other health organisations are reviewing the results. That is a reason for caution, not for buying the test as a matter of course.

The pharmacological frontier

Rapamycin (sirolimus), produced by a bacterium first isolated from samples found on Easter Island, inhibits the mTOR pathway and was shown in 2009 to extend lifespan in mice. In medicine it is mainly used to prevent organ-transplant rejection. It is not approved as an anti-ageing drug, and the human studies so far have not shown a statistically significant longevity benefit; side effects and unclear dosing are why researchers say more work is needed.

Metformin, the long-established diabetes drug, was for years the other longevity favourite. A 2019 randomised trial in older adults, published in Aging Cell, found that metformin blunted some of the gains in aerobic fitness and insulin sensitivity that exercise training otherwise produced; it is one small study, but it is a reason not to take metformin for longevity without a medical reason.

Senolytics, drugs intended to clear senescent "zombie" cells, are experimental. The best-known combination, dasatinib and quercetin, includes a prescription leukaemia drug. This is clinical-trial territory, not a supplement routine.

The sensible position: discuss anything pharmacological with your doctor, and treat confident online "stacks" with deep suspicion.

The Nordic advantage

The Scandinavian way of life already contains much of what the longevity industry sells back to us: walking and cycling as transport, time outdoors, the sauna habit and a diet built on rye, fish and vegetables. The sauna evidence is the strongest of the traditional habits, from a Finnish cohort of 2,315 middle-aged men followed for about twenty years, though it shows an association, not proof. Cold-water plunges are less well supported, and anyone with a heart condition should talk to a doctor before trying them. We cover both in detail in the Nordic wellness routine and the sauna renaissance.

The cost of living forever

Longevity done "properly", with private scans, panels, trainers and supplement stacks, is the ultimate Veblen good, and much of the spending buys reassurance rather than years. The highest-return items are close to free: movement, strength, sleep, friends, not smoking. If you want a supplement layer, start with the boring end: vitamin D through dark winters (as Nordic health authorities advise) and, if your diet is short of it, something like magnesium; BIOptimizers Magnesium is a far more conservative starting point than anything in the senolytics aisle, and still worth discussing with a doctor if you take other medication.

And keep the point in view. If the protocol leaves no room for a long lunch, a late night with friends or a slice of birthday cake, you are extending the years while shrinking the life in them.

For the habits underneath it all, see sleep optimisation, the highest-return habit and digital detox retreats.

Related reading: a wild history of wellness from Roman baths to Goop and building a refined daily ritual.

Frequently asked questions

What actually helps you live longer?

The best-evidenced habits are regular aerobic exercise, strength training, good sleep, not smoking, moderate alcohol, social connection and the screening your doctor recommends. The NHS advises at least 150 minutes of moderate activity a week plus strength work on at least two days.

Is a full-body MRI scan worth it?

For people without symptoms, risk factors or a relevant family history, the American College of Radiology says there is not enough evidence to recommend total-body screening, largely because scans find many non-specific abnormalities that lead to further tests. Some high-risk groups are different; ask your doctor.

Should I take a multi-cancer blood test like Galleri?

It is a prescription test meant to be used alongside routine screening, and it can give false positives and false negatives. The large NHS-Galleri trial reported in 2026 that it did not reduce late-stage diagnoses overall, its main goal, though fewer of the most advanced cancers were found. Discuss it with a doctor.

What is the difference between Bryan Johnson's and Peter Attia's approaches?

Johnson's Project Blueprint is an intensive personal regimen of diet, supplements and constant measurement aimed at reversing his biological age. Attia's Medicine 3.0 focuses on preventing the main chronic diseases through exercise, strength, sleep, metabolic health and screening, which rests on stronger evidence for most people.