The Future with Hannah Fry Episode 1: Can We Really Live to 150, and What Would It Cost Us?
The Future with Hannah Fry episode 1 opens with a deceptively simple question: would you like to turn back your biological clock? From a hyperbaric oxygen chamber in California to the streets of Tokyo, mathematician and writer Professor Hannah Fry travels across the world to examine one of humanity’s oldest obsessions — living longer. What she finds is a collision between cutting-edge science, expensive pseudoscience, philosophical wisdom, and some profoundly uncomfortable questions about what extended life would actually mean for all of us.
The stakes are enormous. Scientists say they are genuinely closing in on methods that could rejuvenate human cells. Researchers have reversed skin cell ageing by up to 30 years in the laboratory. People with macular degeneration have been given their sight back through regenerative medicine. A miniature beating heart has been created at Michigan State University. And a UCLA spinout company can now read your epigenetic clock from a single vial of blood — telling you not just how old your body currently is, but potentially how long you have left. Meanwhile, in Japan, where the average person already lives to 85, neuroscientists argue the real secret to longevity has nothing to do with supplements, devices, or drugs at all.
The tension between those two worlds — the high-tech and the philosophical — runs through everything Fry encounters. And the question she keeps returning to is not simply whether living to 150 is possible, but whether it is actually desirable, and whether society is even remotely prepared for what that would mean.
Fry’s first stop is the home of Dora Vandekamp, a California-based anti-ageing influencer and committed biohacker. The house is a glimpse into a world where health has been elevated to something close to religion. Industrial-grade air filters tackle mould. The morning routine begins with a cocktail of supplements: five forms of magnesium, powdered mushrooms, beef liver capsules, and something called molecular hydrogen. Red-light therapy panels run for at least 20 minutes every morning. Dora claims to stimulate collagen and elastin production, reduce inflammation, and support cellular regeneration — all before breakfast.
The evening routine includes taping the mouth shut before sleep. The logic is that humans are designed to breathe through their noses, and forcing nasal breathing at night is supposed to bring a range of health benefits — though none of them have been scientifically proven. Dora and her partner Andrew have collectively spent over $200,000 on health and wellness interventions. Their fridge contains meat sourced from a local farm. Their diet is as precisely curated as everything else in the house.
Fry admits she is conflicted. There is a significant amount of pseudoscience on display. But she also notices something harder to dismiss: Dora prioritises her body and carves out time for herself in ways that are genuinely impressive. The supplements may be questionable, but the discipline and self-awareness are not. When Fry asks Dora how long she would want to live, the answer is 150 — not as an arbitrary target, but because she believes she would be more valuable at that age than she is now. Wiser. Better read. More experienced. The number matters less to her than the feeling of having done everything she came here to do.
The Future with Hannah Fry episode 1
Why Ageing Is Written Into Your DNA — and How Scientists Are Learning to Rewrite It
For a long time, scientists believed DNA was essentially fixed from birth — the blueprint you received and kept. That understanding has been fundamentally overturned. DNA is, in fact, dynamic. It changes when you eat a meal. It changes when you spend time with friends. It also changes when you spend years smoking or drinking. This field is called epigenetics.
The mechanism is structural. Your DNA is an extraordinarily long strand that must be coiled and compressed to fit inside each cell. Over time, that coiling shifts. Different sections unravel or twist into new configurations, exposing different parts of the genetic code and changing how the body operates. The results are visible everywhere: hair loss, sagging skin, organs that no longer function as efficiently as they once did. At its most dangerous, epigenetic disruption can contribute to cancer.
Crucially, scientists have now identified specific markers along the DNA strand that reveal how many epigenetic changes a person has accumulated. These markers act as a biological clock — one that measures not how many years you have been alive, but how rapidly your body is ageing. That clock can run faster or slower than your actual age. And now, it can be read.
The GrimAge Clock and the Man Who Built It
Hannah Fry travels to the Clock Foundation, a UCLA spinout, where a single vial of blood becomes the raw material for one of the most confronting tests she could take. The man who designed the test is Professor Steve Horvath, one of the world’s foremost pioneers of the epigenetic clock.
The test works by measuring a process called methylation — chemical modifications made to the DNA molecule itself. As people age, certain sections of DNA accumulate methylation when they should not, while others lose it when they should not. By mapping which parts have gained or lost methylation, Horvath developed a mathematical formula capable of calculating a person’s biological age. His most powerful tool carries a deliberately unsettling name: the GrimAge clock, designed specifically to predict how long a person is likely to live.
Horvath explains the test’s broader scientific purpose with characteristic directness. Without it, to determine whether a life-extending intervention actually works, researchers would have to wait for their subjects to die. The GrimAge clock makes it possible to measure the effectiveness of treatments in real time, by tracking whether biological age is moving in the right direction. It transforms years of waiting into months of data.
Fry waits several weeks for her results. When they arrive, the news is better than she expected. Despite a decade of smoking — which she describes as turning out to be a very bad idea — her GrimAge registers at 39.5 years. Her calendar age is 38. She is, in Horvath’s words, right in the middle: not better off, not worse off. Relieved, she promises to stay on the narrow path. Horvath’s personal recommendation, delivered with notable understatement, is to follow the boring advice: stop smoking, eat vegetables, exercise daily. He is honest enough to add that none of this will radically extend his life. The science has not yet delivered anything more powerful than that. But his research might.
Young Blood, Newborn Plasma, and the Vampire Theory of Rejuvenation
The research that genuinely astonishes Fry involves blood. Specifically, the blood of the young. Horvath describes experiments in which plasma from young rats was transferred into older ones. The treated rats looked substantially younger, their fur softer and less scraggly than untreated controls. Organ age in the treated animals was cut by over 50 percent. The results were so dramatic that Horvath himself says he could not believe them.
Blood plasma is the golden liquid component of blood. In humans, it contains over 700 proteins and substances that are essential for the body to function. In rats, certain proteins in the plasma decline with age. Replacing them appears to physically reverse the ageing process at a cellular level. This is not fringe speculation — Horvath describes it as very well studied.
The human trials are small but consequential. In one study, umbilical cord blood harvested from newborn babies was injected weekly into 18 participants with an average age of 75. After ten weeks, epigenetic clock analysis showed that GrimAge had genuinely been rejuvenated — a measurable reversal of biological ageing. Horvath is careful to frame these as proof-of-concept studies. Umbilical cord blood is not scalable. But the findings point toward the real prize: identifying which specific proteins or chemicals are responsible for the age-reversing effect. Isolate those, and you can develop a drug. That is the direction of travel.
Regenerative medicine — the broader branch of science that seeks to repair or replace deteriorating body parts — is advancing alongside these plasma studies. Scientists at the Babraham Institute in the United Kingdom reversed the ageing of human skin cells by up to 30 years in laboratory conditions. Patients with macular degeneration have been given functional sight back. The miniature beating heart created at Michigan State University represents a future in which worn-out organs might simply be replaced. The convergence of these technologies, Horvath believes, is slowly building toward something genuinely transformative.
A Society That Cannot Afford Its Own Longevity
The science of living longer is advancing faster than the social and economic structures designed to support it. Economist Andrew Scott has spent considerable time working through what extended lifespans would mean for governments, employers, pension systems, and individuals. His conclusions are not comfortable.
The 20th century created retirement. As wealth increased and life expectancy extended, societies invented the weekend and the pension. People worked, then stopped working and enjoyed leisure — an arrangement that made sense when 65 marked the beginning of a relatively brief final chapter. That model is already breaking under the pressure of longer lives. Governments across the world are raising the state pension age. The maths simply does not work otherwise.
Scott argues the response cannot be to make people work indefinitely into old age. Instead, the structure of working life itself will need to change. The four-day week, flexible working arrangements, and careers that allow people to scale down and back up again across their lives — these are not idealistic experiments but emerging necessities. The leisure that previous generations placed at the end of life will increasingly need to be distributed throughout it. People living to 100 will require a fundamentally different relationship with work, education, and rest than the linear model — school, then career, then retirement — currently allows.
What that also demands, Scott emphasises, is a longer-term perspective on life itself. The decisions made at 25 will have consequences at 75 that simply did not apply when most people did not reach 75 in good health. Financial planning, career choices, health investments — all of these are recalibrated when the horizon extends by decades.
Japan’s 85-Year Average and the Concept That Explains It
Japan is where The Future with Hannah Fry episode 1 lands for its most philosophically rich section. The average Japanese man or woman can expect to live to 85 — eight full years longer than the American average. Japan also has the highest percentage of over-65s anywhere in the world. Yet those elderly people are, by many accounts, often more active and youthful than younger generations elsewhere.
Fry meets neuroscientist Dr Ken Mogi in Tokyo to understand why. Mogi’s answer does not involve supplements, blood transfusions, or epigenetic clocks. It centres on a Japanese concept called ikigai — roughly translatable as a reason for being.
Ikigai is not the same thing as career ambition or life purpose in the Western sense. In Western culture, purpose tends to attach itself to achievement: a career, a legacy, a grand ambition. Ikigai is different. It can be something as modest as taking a dog for a walk or going for a morning run. For Mogi personally, it includes looking for butterflies — a habit formed when he studied them as a child. When he mentions the butterflies, Fry notes that his face genuinely lights up. Mogi explains why: butterflies have short lives, which means encountering one is always, in some sense, a miracle.
The genius of ikigai as a longevity philosophy, Mogi argues, is that it operates through small things. Japan is a country that elevated the act of drinking tea into an art form, a practice rooted in the importance of being fully present in the moment. Buddhist monks practise it. Schoolchildren practise it. Grown-ups practise it. The accumulation of small pleasures and small purposes, Mogi believes, creates the conditions for a long and healthy life. Not one big silver bullet, but what he describes as a magic carpet floating on many small things.
The implication for everyone else is direct. Most people searching for longevity — the biohackers, the supplement-buyers, the hyperbaric oxygen chamber users — are looking for the device, the cream, the pill. Mogi suggests that the people who live the longest and healthiest lives are precisely those who are not focused on longevity at all. When Fry asks Mogi whether he wants to live a long life, his answer is immediate: no. He wants to live well.
What Longevity Actually Requires You to Change
The Future with Hannah Fry episode 1 closes with a reflection that cuts through the noise of the biohacking industry and the excitement of plasma studies. Fry concludes that she does not expect to see people living to 150 any time soon. The research is real and some of it is genuinely remarkable. There is real promise in the science of cellular rejuvenation and the extension of healthy years. But longevity cannot simply be about delaying the inevitable.
The shift required is not primarily technological. It is psychological. Seeing life not as a long challenge to be survived and optimised, but as a succession of moments of joy and purpose — that reframing may be more powerful than any intervention currently being tested in a laboratory. A phrase Fry returns to captures it directly: life is not a problem to be solved. It is an experience to be had.
At a shrine in Tokyo, she asks Ken Mogi to write something on an ema board — a wooden panel where anyone can hang their hopes for the future. What she asks him to write, in Japanese, is this: I hope I get to live a life of play. In that small ritual, in that city where people already live longer than almost anywhere else on Earth, something about the whole search for extended life quietly resolves. The science matters. The social structures matter. But underneath all of it, the question is the same one it has always been: not how many years, but what you do with them.
FAQ The Future with Hannah Fry episode 1
Q: What is The Future with Hannah Fry about?
A: The Future with Hannah Fry follows mathematician and writer Professor Hannah Fry as she investigates the science, technology, and philosophy surrounding human longevity. In episode 1, she travels from California to Japan to explore anti-ageing treatments, epigenetic research, and cultural approaches to living longer — asking whether a 150-year human lifespan is genuinely within reach.
Q: What is an epigenetic clock and how does it measure biological age?
A: An epigenetic clock reads specific chemical markers along a DNA strand to calculate how rapidly your body is ageing — independently of your calendar age. As DNA coils shift and unravel over time, these changes alter how the body functions. Professor Steve Horvath developed a mathematical formula that maps those changes, producing a biological age that can run faster or slower than your actual birth age.
Q: What is the GrimAge clock and what does it predict?
A: The GrimAge clock is an epigenetic test developed by Professor Steve Horvath, named after the Grim Reaper. Unlike standard biological age tests, it is specifically designed to predict how long a person is likely to live. By measuring DNA methylation patterns — chemical modifications that shift in predictable ways with ageing — it gives researchers a mortality predictor without waiting decades for outcomes.
Q: Can young blood actually reverse ageing in humans?
A: Early research suggests it can produce measurable biological effects. In rat experiments, transferring plasma from young animals into older ones cut the biological age of multiple organs by over 50%. A human trial injected umbilical cord blood from newborns into 18 participants averaging 75 years old, once weekly for ten weeks. GrimAge analysis confirmed their biological age was rejuvenated. However, these remain proof-of-concept studies — not practical treatments.
Q: What is biohacking and does it actually extend your life?
A: Biohacking involves obsessively optimising the body through supplements, devices, diet, and lifestyle interventions in pursuit of longer, healthier life. Practices range from red-light therapy and hyperbaric oxygen chambers to five-form magnesium stacks and mouth-taping before sleep. While some biohackers report feeling significantly healthier, most interventions lack scientific proof. Experts acknowledge the discipline behind biohacking but distinguish it sharply from evidence-based longevity science.
Q: What is regenerative medicine and how far has it advanced?
A: Regenerative medicine seeks to repair or replace deteriorating parts of the human body using biological science. Recent advances include reversing skin cell ageing by up to 30 years in laboratory conditions at the Babraham Institute, restoring sight to patients with macular degeneration, and creating a miniature beating heart at Michigan State University. Researchers hope these technologies will eventually allow worn-out organs to be replaced entirely.
Q: Why do Japanese people live longer than people in most other countries?
A: Japan’s average life expectancy reaches 85 — eight years higher than the United States — and the country has the highest percentage of over-65s in the world. Neuroscientist Dr Ken Mogi argues the primary driver is not diet or exercise alone, but a cultural philosophy called ikigai: maintaining a daily sense of purpose and presence. Japanese elderly remain notably active, with many appearing more youthful than younger generations elsewhere.
Q: What is ikigai and why is it linked to a longer life?
A: Ikigai is a Japanese concept meaning a reason for being — the thing that gives your day purpose and makes getting up worthwhile. Unlike Western ideas of purpose, which tend to centre on career or major achievement, ikigai can be as small as a morning run or spotting a butterfly. Dr Ken Mogi argues that people who live the longest are often those least focused on longevity itself, finding meaning instead in consistent small pleasures.
Q: How will longer lifespans change retirement and working life?
A: Economist Andrew Scott argues the traditional model — work, then retire — is already financially unsustainable as lifespans extend. Governments are raising state pension ages because societies simply cannot afford decades of post-retirement leisure. Scott predicts leisure will increasingly be distributed across working life rather than saved for the end, with flexible working, four-day weeks, and varied career structures replacing the linear model most people currently follow.
Q: Does a healthy lifestyle significantly extend how long you live?
A: Probably not as much as most people hope. Professor Steve Horvath is candid: stopping smoking, eating vegetables, and exercising daily are the best currently proven steps — but they will not radically increase life expectancy. Good diet and exercise alone will not produce dramatic longevity gains. The real extension of healthy years is expected to come from drug-based interventions targeting specific rejuvenation proteins, currently still in early research stages.
