Blue Zones: The Paperwork Is in Order

Why the world’s longevity hotspots might owe more to filing cabinets than to beans

In the summer of 2010, a pair of ward officials in Adachi, Tokyo, set off to do one of those small, decent jobs that governments occasionally remember to do. Japan honours its elderly every September, and Sogen Kato, born in July 1899, was on the books as the city’s oldest man. He was about to turn 111, so somebody had to knock on the door, say congratulations, and probably hand over a certificate… the sort of visit that ends with a photograph in the local paper and a cup of tea nobody really wanted.

The family weren’t keen on visitors. Grandad, they explained, had retreated to his room some decades earlier to become a “living Buddha” and wasn’t receiving guests. Eventually the police went in and found Mr Kato in bed, in his pyjamas, under a blanket, mummified. He had been dead for roughly thirty-two years, and in that time around ¥9.5 million in pension money had kept dropping politely into his account. Two of his relatives were later charged with fraud. (Wikipedia: Sogen Kato)

I’ll be honest, the first time I read that story I laughed, and then I felt slightly ashamed of laughing, which is usually the sign that something true has just walked into the room. Because what happened next is the bit that matters. Japan, a country rightly proud of both its paperwork and its old people, started checking on its other centenarians. Within a fortnight the list of the unaccounted-for was heading towards two hundred, and in Kobe alone officials couldn’t find 105 of the 847 centenarians on their books. (Banglanews24/AFP, August 2010) Nobody had been lying about being old, exactly. The records had simply carried on living after the people had stopped.

Hold onto that thought, because we’re about to take a little holiday to the Blue Zones, the sunny corners of the world where people supposedly live longer than the rest of us, and I’d like you to pack it in your hand luggage.

The brochure

If you’ve spent any time online in the last few years, you’ll have met the Blue Zones whether you wanted to or not. They turn up in your feed between a man selling cold plunges and a woman explaining why you’re eating breakfast wrong. The term belongs to Dan Buettner, an American journalist and National Geographic fellow, who gave it to a handful of places where people apparently reach a hundred far more often than the rest of us: the mountain villages of Sardinia, Okinawa in southern Japan, the Greek island of Ikaria, Costa Rica’s Nicoya Peninsula, and Loma Linda in California. A 2016 paper Buettner co-wrote claimed people in these places hit a hundred at ten times the rate of Americans. (Popular Science)

The recipe, boiled down into a tidy list called the Power 9, is gentle and genuinely pleasant. Move naturally rather than punishing yourself in a gym. Have a reason to get up in the morning. Rest. Eat mostly plants, lots of beans, and stop before you’re stuffed. Have a glass of wine with friends. Belong to something, put your family first, and surround yourself with people who make you better rather than worse. Put it on a tea towel and you could sell it in a National Trust gift shop.

And then it grew, as these things do. There are bestselling books, cookbooks, and a 2023 Netflix series, Live to 100: Secrets of the Blue Zones, which won Emmys and was watched by roughly everybody’s aunt. (Eric Topol) Buettner now works with local governments, big employers and health insurers to roll out “Blue Zones Projects” across whole communities. (Federal News Network) In 2023 he even announced a sixth zone, Singapore, the first one built deliberately rather than discovered. (Tatler Asia) Which is a bit like discovering a rare species in a pet shop, but let’s not be churlish.

I understand the appeal, I really do. The Blue Zones don’t sell you a pill or a protocol. They sell you a postcard of old age that most of us would quite like to live in: sunshine, a vegetable patch, grandchildren under your feet, the neighbours dropping by, and a small glass of red at five o’clock. It’s the opposite of the care home, the waiting list and the beige corridor. Of course people want it to be true.

The paperwork

Enter Saul Justin Newman, a researcher at University College London and Oxford’s Institute of Population Ageing, who asked a far less romantic question. Not “what are these people eating?” but “are these people actually as old as the paperwork says?” His conclusion, in short, is that the striking clusters of centenarians in the Blue Zones may owe less to beans and purpose and rather more to errors and fraud in the records. (Popular Science) His summary of the supposedly ancient is the line that made me sit up: “Their paperwork is in order, they’re just dead.” (Fortune)

He also noticed something nobody puts on the tea towel. Many of these places share low incomes, low literacy, high crime and national lifespans that are shorter than average… which, if you think about it for longer than a cookbook allows, ought to make people die sooner, not later. (Popular Science) Put poverty, patchy birth registration and a pension cheque in the same room, and you don’t need to be Columbo to guess where some of the extra years might be coming from. Okinawa is a case in point: a great deal of its paper trail went up in smoke during the 1945 battle, and the family registers had to be rebuilt afterwards, which is fertile ground for a few birthdays drifting backwards. The work earned Newman an Ig Nobel Prize in 2024, the award for research that makes you laugh and then think, and this year he’s published a whole book on it, Morbid: Debunking Modern Longevity Science. (The Unbiased Science Podcast; MIT Press Bookstore)

I have a soft spot for this argument, and I’ll admit it’s not purely scientific. After the RAF Police I spent years in civilian security as the man people called Mr Memo, because I put everything in writing and made people sign to say they’d read it. Directors later leaned on those memos as evidence, and quite right too. But the job taught me something the brochure writers seem to have missed: a signature proves a document was signed. It doesn’t prove anyone read it, it doesn’t prove the person was who they said they were, and it certainly doesn’t prove they were breathing at the time. Records tell you what somebody wanted on the record. That’s useful, but it isn’t the same as the truth, and it’s never the same as a pulse.

Newman’s own answer is almost comically practical. The only way out of the mess, he argues, is to stop trusting the documents and physically measure how old people actually are. (Gulf News/AFP) In other words… go round and knock on the door. Which, as Mr Kato’s family could tell you, is precisely the step everybody skips.

The defence

Now, in fairness, and I do try to be fair even when I’ve already picked a side, the Blue Zones people have not taken this lying down. Several of the demographers behind the original research wrote a rebuttal calling Newman’s work ethically and academically irresponsible. Their main charge is that he lumped together whole regions, all of Sardinia, all of Okinawa, when the actual zones are much smaller pockets, and that they had already gone through the ages of the oldest residents by hand, cross-checking registries and historical records going back to the 1800s. (Fortune) In December 2025 two of Buettner’s collaborators doubled down with a formal response in the journal The Gerontologist, defending the validity of the demography. (Eric Topol)

That’s not nothing. Painstaking demographers poring over baptism registers are not the same animal as a lifestyle influencer with a ring light, and it would be lazy of me to pretend otherwise. Even one respected ageing researcher who found Newman’s analysis rigorous and convincing pointed out that several of the zones are overseen by serious scientists. (Gulf News/AFP)

But look at the shape of the defence. Newman says the records can’t be trusted. The reply is, essentially, “we checked the records very carefully.” Newman’s response was that this proves his point, and from where I’m sitting, that’s not just a debating trick. If the source is contaminated, checking it twice gives you a very tidy version of the same contamination. Any investigator worth their warrant card knows the difference between a well-kept file and a true one.

What I find more telling is a quieter admission that sits underneath all the shouting. Even the defenders now accept that whatever longevity advantage these places once had may be slipping away in younger generations, and one of the Nicoya researchers has suggested that extreme longevity hotspots are probably temporary by nature. (Popular Science) Which raises an awkward question for anyone selling a place as a secret. What exactly are you selling, if the place has stopped producing it?

The zone that quietly moved

If you want to see the problem in one picture, go to Okinawa, the poster child of the whole movement. In 1980 it topped Japan’s life expectancy tables for both men and women, and Okinawan men held first place again in 1985. (Jiji Press) Then, in 2000, the men tumbled from fourth to twenty-sixth out of forty-seven prefectures in a single five-year survey. It was such a jolt that Japanese demographers gave it a name, “Shock 26”, and the local government launched a campaign to win the crown back by 2040. (Space Daily)

It hasn’t gone well. By 2020 Okinawan men were forty-third out of forty-seven, and the women, who had led the country for decades, had dropped out of the top ten for the first time since records began, sitting at sixteenth. The longest-lived men in Japan now come from Shiga, a largely rural prefecture near Kyoto that nobody has ever made a Netflix series about. (South China Morning Post) The prefectural government blames obesity and lifestyle disease as people drifted away from the traditional vegetable-heavy diet, a shift that researchers trace back to the years of American administration after 1945. (Jiji Press)

So the most famous longevity hotspot on Earth is now below average in its own country, and the brochure has not been reprinted. You can read that two ways, and I think both are partly true. The kind reading is that something real did happen in Okinawa: a generation raised on sweet potatoes, hard graft and tight-knit villages did unusually well, and their grandchildren, raised on fast food and fluorescent offices, are not. The less kind reading is that some of those famous early numbers were built on reconstructed paperwork in a place that had been flattened by war, and the newer, better-recorded generations are simply more honest about when people die.

Either way, the lesson is the same, and it’s the one the Blue Zones brand finds hardest to swallow. Whatever made those people live long, it was never really the postcode. It was a moment in history, a particular way of being poor, busy and connected, and it has largely gone. You can visit Okinawa. You can’t visit 1950.

Who owns the secret?

Here’s where my rebellious streak starts tapping its foot. Blue Zones isn’t just an idea, it’s a company. Buettner trademarked the name back in 2005, and in 2020 he sold Blue Zones LLC to Adventist Health, with his son now a senior executive and the likely heir to the business. (Eric Topol) Its community programmes are sold to councils, employers and insurers, and the company says they’ve improved the health of more than five million Americans. (Longevity Project) I’m not suggesting anything sinister in a Seventh-day Adventist health organisation buying a brand that counts an Adventist town, Loma Linda, among its original wonders. But if I’d put that in a novel, my editor would have told me to tone it down.

None of this makes Buettner a villain. He’s a gifted storyteller who found a story people were desperate to hear, and he’s told it beautifully. The trouble is what happens when a story becomes a product. Products need to stay true, or at least to stay saleable, long after the evidence has started to wobble. You don’t rewrite the bestselling cookbook because Okinawan men have slipped to forty-third. You add a sixth zone and film another series.

Critics have pointed out that the lifestyle being sold bears little resemblance to how people in these places actually live, and that the Blue Zones don’t even hold the longest lifespans in their own countries. (TheBlaze) The bit that really sticks in my throat, though, is the poverty. The common thread running through several of these places is hardship: little money, little schooling, hard physical work because there was no other kind. That’s been quietly rinsed out and repackaged as “natural movement” and “plant-forward eating” for people who can afford a cookbook and a Netflix subscription. The poverty doesn’t come in the box. Neither does the war, the emigration of the young, or the pension office that never checked.

Newman’s advice on all this is my favourite line in the whole saga. If you want to live a long time, he says, the first step is not to buy anything. (Fortune) It’s the least marketable sentence in the entire longevity industry, which is probably why it’s the most trustworthy.

What survives when you take the magic out

And here’s the twist that stops this from being a simple hatchet job. Strip away the centenarians, the trademarks and the drone footage of Sardinian hillsides, and the advice itself is… fine. Better than fine. Eat more beans and vegetables, walk more, keep people around you, have something to get up for. Those are the bits Buettner keeps coming back to, and as the cardiologist Eric Topol points out, they’re backed up by randomised trials and large long-term studies. (Eric Topol) The advice was never the scandal. The mystique was.

Because think about what the Blue Zones story actually does to that advice. It takes something your nan would have told you for free over a cup of tea, and relocates it to a faraway island, as though the secret to a decent old age were hidden somewhere exotic and needed a guide to retrieve it. It turns common sense into a destination. And destinations, as any travel agent will tell you, can be sold.

It also quietly lets everyone else off the hook. If longevity is about a Sardinian grandmother’s minestrone, then it’s a personal lifestyle choice, and the people who don’t make it to ninety simply chose wrong. Nobody has to talk about wages, housing, loneliness, clean water, or whether there’s a GP within reach. Okinawa’s slide wasn’t caused by people forgetting to read a list. It came from enormous changes in how they worked, ate and lived, most of which they didn’t choose. That’s a far less comforting story, and nobody’s going to make a cookbook out of it.

So is the Blue Zones idea a myth? Partly, possibly, quite a lot, depending on which spreadsheet you trust. Is it useless? No. It’s a good set of habits wrapped in a bad set of numbers and sold as a secret. The habits are worth keeping. The secret is worth returning to the shop.

Notes from a Spanish hillside

I should confess something before I wrap this up, because it would be a bit rich to mock the brochure without admitting I’m practically living in it. I’m sixty-six. I live pretty much off-grid in a cave on a hillside just outside Orce, a village of around 850 people in rural Spain, with a small group of friends. We keep chickens. We cook most things from scratch. We walk because the hill doesn’t care whether we fancy it or not. When the reservoir supply goes down, as it does, we fall back on our own water and get on with it. On a good evening there’s a glass of wine and a long argument about nothing. Run that through the Power 9 and I’d score well enough to be filmed in slow motion.

But I didn’t come here to live longer. I came because friends who’d bought the place asked me, and because when I priced up going back to Britain, I realised it would mean a smaller, more anxious life for more money. Nobody handed me a list. And if I’m honest about what actually feels life-extending up here, it isn’t the beans. It’s being needed. The chickens don’t feed themselves, the water doesn’t manage itself, and there are people around me who would notice, quite quickly, if I didn’t appear in the morning. That last one matters more than anything I could put on a plate.

I also see the other side of the postcard every day. The village has been losing people for years. Every year there seem to be fewer faces, efforts to draw newcomers in are far too low-key, and the old folk who remain are not living on some secret wisdom so much as on stubbornness, habit and each other. It’s beautiful here, and it’s fragile, and I suspect that’s exactly what Okinawa and Sardinia looked like before anybody started selling them.

So I don’t know whether the Blue Zones were ever real, and I’m not sure anybody can fully know now. Maybe they were. Maybe they were a generation rather than a place, and the generation has gone. Maybe some of them only ever existed on paper. What I do know is this. If I ever make it to a hundred, I’d like someone to come up the hill and check. Properly. Knock on the door, look me in the eye, and see whether I’m still arguing. Not because I’ll have a secret to sell… but because the only thing worse than dying unnoticed is being celebrated for thirty years afterwards by a spreadsheet.