The Brain Ledger: Vietnamese Football Has Opened No Registry, While FIELD Already Counted 3.5 Times

The match I replayed most often last season finished 0-0 and produced no highlight. I watched it again only to count. One away centre-back, ninety minutes, fourteen headers: nine clearances from set pieces, five duels inside the box. Add the training session the previous morning. Add ten years in an academy. Add the season before, and the one before that. I wrote the tally on paper and realised the V.League match sheet has no column for it.

On 19 January 2026, Jeff Astle died at 59. He was the West Bromwich Albion striker who scored the only goal of the 2026 FA Cup final against Everton, and one of the finest headers of a ball in England in his era. Coroner Andrew Haigh recorded an "industrial disease" verdict — a phrase the English legal system had previously reserved for miners, builders and shipyard workers. The recorded cause: repetitive minor trauma from heading a heavy leather ball.

It took twelve years, and a re-examination of his brain tissue by neurologist Willie Stewart, before the thing that killed Astle could be named: CTE, chronic traumatic encephalopathy. His daughter Dawn Astle has campaigned since. She said something I have never forgotten: "My dad died of football, and football does not want to know."

On 20 October, a news item about the actress Sarah Rafferty — Donna Paulsen in Suits, 53 — travelled widely. She described her father, 90, living with Alzheimer's; her grandmother, who also had Alzheimer's and has died; and her role as a face of an Eli Lilly campaign around the treatment Kisunla. The family story is real and painful, and most of the piece is her own words.

There is not a single word about football in it. But the packaging is uncomfortably familiar: a genuinely painful private story, told in a neutral news register, wrapped around a commercial partnership with a pharmaceutical company — and the partnership is never mentioned.

Football does the same thing with players' brains, with one difference: football needs no pharmaceutical company to do the wrapping. Football only needs silence.

Vietnamese football does not lack a measuring instrument — it lacks a ledger. And not opening the ledger is a governance decision, not an accident of science.

What Glasgow managed to count

In October 2026, Willie Stewart and colleagues published the FIELD study — Football's Influence on Lifelong Health and Dementia Risk — in the New England Journal of Medicine. They took 7,676 former Scottish professional players born between 2026 and 2026 and matched them against 23,028 controls of the same age, sex and area of residence. The finding: neurodegenerative disease mortality in the player cohort was 3.5 times higher than in the general population.

Later analyses broke that figure apart. Alzheimer's around five times higher. Motor neurone disease around four times. Parkinson's around twice. And a companion finding that is rarely quoted: the player cohort had lower mortality from cardiovascular disease and lung cancer than the general population. Professional footballers live healthier lives in almost every respect — except in the brain.

The same dataset contains a detail that ruins every simple model: goalkeepers carried neurodegenerative risk broadly comparable to outfield players, despite almost never heading the ball. A second detail: defenders carried the highest risk of any outfield group, which fits the heading hypothesis. Those two facts pull in opposite directions, and I will return to them.

Alongside the data sits a sequence of deaths that created the political pressure. In 2026 Nobby Stiles, a 2026 World Cup winner, died after years of dementia; his brain was later found to show advanced CTE. That same year Jack Charlton died, also with dementia. In October 2026 Bobby Charlton died; he had been diagnosed with dementia in 2026. In January 2026 Denis Law died, also within the dementia group. Four men, one generation, one disease.

The governance response arrived in inverse order of urgency. US Soccer banned heading for under-11 and younger in 2026, with limits at under-12 and under-13, following a class action over concussion. England issued guidance limiting heading in training in February 2026. Scotland banned heading in training below under-12 level in 2026. UEFA added heading guidance for youth coaching. Each step took between three and ten years after the data was already on the table.

In Vietnam I spent two weeks looking for documents. I found regulations on player registration, on pre-season medical certificates, on anti-doping. I found no publicly available Vietnam Football Federation document limiting heading volume in youth training by age group, and no mandatory substitution protocol for suspected concussion. Those documents may exist in somebody's drawer. But a rule nobody can cite does not, in practice, exist.

And there is no post-career neurological registry. That is the point I want to sit with longest, because it is cheap, it is easy, and nobody is doing it.

The count nobody takes

International publications on heading frequency in professional football generally land between six and twelve headers per player per match, depending on position. That is an estimate range, not a uniform measurement — every study defines "a header" differently, and many count matches but not training.

Take the midpoint, eight per match, and multiply by a career. A V.League regular over fifteen years, twenty-five matches a season, plays roughly 375 competitive games. Times eight: 3,000 headers in matches alone. That excludes cup competitions, excludes the national team, and most importantly excludes training.

Training is the forgotten half. A professional centre-back's session can contain ten to twenty heading actions — defensive heading drills, contested aerial work, finishing with the head. Five or six sessions a week across forty weeks a year, over fifteen years, produces a range somewhere between 30,000 and 60,000 headers across a career. Most are light, painless, and recorded by nobody.

A player like Le Huynh Duc competed at the top for nearly two decades, across several different eras of Vietnamese football, with a competitive appearance count well above the norm. The same is true of names like Nguyen Hong Son and that golden generation. We can count their goals, their caps, their trophies. We cannot count the only thing that may be accumulating inside their skulls.

I do not present that arithmetic as epidemiological evidence. It is a multiplication, and multiplication is not research. But it demonstrates one thing: if we wanted to know, we already know exactly what to measure. The problem is that nobody is holding the ruler.

The goalkeeper paradox and the limits of the heading story

This is where I want to spend the most space, because it is where most coverage of this subject skates past.

If heading were the cause, goalkeepers should be the safest group on the pitch. They do not contest aerial balls, do not head clear, do not head at goal. Yet in the FIELD data, goalkeeper neurological risk was not meaningfully lower than that of outfield players.

There are four explanations, ranked by how much I believe them.

First, the goalkeeper sample was small, so confidence intervals were wide, and "no significant difference" is not the same as "the same". This explanation is technically correct, dull, and useless to a coach.

Second, heading is only one component of total head-impact dose. Goalkeepers absorb knees to the head when diving out, impacts with posts, impacts with turf, impacts with strikers in one-on-one situations. In the V.League I have watched goalkeepers launch themselves body-first and take a hip to the temple, then stand up and carry on. Nobody checks.

Third, the mechanism may not be a single impact but cumulative neurological load — and that load comes from conditioning work, sprinting, twisting, falling. If so, a heading ban is correct but insufficient, and worse, it creates the impression the problem has been handled.

Fourth, there may be selection effects or unmeasured background factors: diet, injury history, alcohol, sleep, and genetic factors that an observational study cannot isolate.

The lesson is not that heading is harmless. It is that a youth heading ban may function more as a policy ritual than a medical intervention if it is not accompanied by measurement of total impact dose and longitudinal follow-up.

And here Vietnamese football has an advantage it is wasting. We are small. The V.League has fourteen clubs. A neurological health registry covering every professional player in Vietnam is deliverable inside one season, at a cost below one month's wages for a mid-range foreign signing.

The data blind spot: no numerator, no denominator

I once made a podcast episode about former players selling lottery tickets, riding motorbike taxis, working as security guards. People listened. When it was finished I realised I had asked the wrong question. I asked "what do you live on?". I did not ask "how do you sleep, do you forget the names of old teammates, do you remember what you just said?".

Nobody asks that, because there is nowhere to record the answer.

In Vietnam, when a former player dies, the obituary usually uses one formula: "passed away after a period of illness". No cause. In our culture, a 70 or 75-year-old losing their memory is treated as a matter of ageing, of nature, of the family — not of occupation. The label "lan" closes every inquiry before it opens.

What we have instead is a collection of oral accounts: a former international whose teammates say "he forgets things halfway through a conversation now"; a former centre-back whose family hides the illness for fear of the stigma. Those accounts have suggestive value. They have no statistical value.

And I have to be honest about my own side of it. Across twelve years of hosting, I have asked hundreds of players about tactics, contracts and referees. I have never once asked about the head. I am part of that blind spot, not an observer standing outside it.

A brain liability is an off-balance-sheet liability

Than Quang Ninh went bankrupt: I am sad because so few people read the financial statements before falling in love with a club.

What I took from that case was not the size of the unpaid wages. It was how invisible liabilities are handled: they are not erased, they are transferred to whoever will carry them. When a club stops paying wages, the liability moves to the player's family. When a club does not track neurological health, the liability moves to a player's wife and children, twenty-five years later.

In accounting, a liability that is not recognised does not exist on the statement. In sports medicine, a case that is not diagnosed does not exist in the statistics. Same mechanism, same incentive: what cannot be measured does not have to be paid for.

That is why I do not trust the "football must take responsibility" speech. Responsibility does not run on ethics; it runs on cost. English football changed partly because of data, but mostly because of a class action in the United States and because insurers began pricing concussion risk into contracts. When risk has a price, people buy risk reduction.

In Vietnam no insurer currently prices players' neurological risk, because there is no data to price it with. The loop closes: no data, no price, no incentive, no data.

Medical confidentiality as a governance tool

I have a professional principle I have stated many times on air: medical confidentiality leaves fans and media blind, and clubs disclose injuries only when disclosure benefits them.

That sounds paradoxical until you watch how it operates. A player with a groin strain — the club publishes details, because that information lowers expectations and relieves pressure on the coach. A player with a concussion — silence, because disclosure would trigger a protocol the club does not have.

That silence requires no conspiracy. It requires only a habit: not asking. In V.League press conferences we ask about formations, availability, refereeing. We do not ask about the head. And because nobody asks, nobody has to answer.

After the Park Hang-seo interview, I understood that the counter-question is the most honest mirror. He answered me about counter-attacking philosophy with complete ease, because it was a tactical question. Had I asked about his players' concussions, I suspect I would have received a polite, empty answer. Not because he does not care, but because the system has no slot for that answer.

Academies: the most worrying place is the least watched

A professional player typically begins controlled heading between the ages of nine and eleven, when they move from a size-3 to a size-4 ball. At Vietnam's major academies — PVF, HAGL JMG, Viettel, Song Lam Nghe An — children train residentially, twice a day, for years. That is the best possible environment for skill development, and the best possible environment for accumulating a large impact dose before the age of fifteen.

Scotland banned heading in training below under-12 level in 2026. The United States banned it at under-11 in 2026. We have nothing.

But I want to be fair to one detail that helps Vietnam. Street football, plastic-ball football, alley football — the environment that produced most Vietnamese players — involves very few headers. Small pitches, small balls, technical footwork. A child who grows up in a Hanoi back street or a Quang Nam village may play for ten years with far fewer headers than a child raised in a European academy.

Which means Vietnam's risk profile may have a different shape: less exposure in the grassroots phase, more concentrated in the academy and professional phases, when training volume spikes. That is a testable hypothesis. But only if there is a ledger.

Where I might be wrong

Contrarianism is not an instinct; it is a serious exercise in not saying what everyone else is saying. That exercise begins with interrogating yourself.

I may be wrong on the first count: I am using an observational study to imply causation. FIELD shows correlation. Strong, consistent, replicated correlation — but correlation. Professional footballers differ from the general population on hundreds of variables: income, diet, activity levels, occupation, and the fact that they receive better medical care and are therefore diagnosed more often. Greater diagnosis alone pushes recorded mortality upward. That is a classic bias and it may explain part of the 3.5.

I may be wrong on the second count: I am extrapolating from Scotland to Vietnam. The FIELD cohort is elite players born between 2026 and 2026, heading heavy, water-absorbing leather balls on muddy pitches, with dense fixture calendars. A V.League player today heads a lighter synthetic ball on better pitches, but covers more ground and generates higher impact speeds. Two different exposure models. I have no evidence that 3.5 applies in Vietnam. It could be lower. It could be higher. Nobody knows.

I may be wrong on the third count: the goalkeeper paradox may demolish my heading argument entirely. If I am honest, that fact is a real crack, not a footnote.

I may be wrong on the fourth count, and this is the least comfortable: I am doing exactly what I criticised at the top of this piece. I have taken an Alzheimer's story, attached it to football, added a shocking ratio, and packaged it under a headline designed to be clicked. If I am careless, I become the unsponsored version of the campaign I just attacked.

The only difference I can claim is that I am stating it out loud instead of burying it below the fold.

I may be wrong on the fifth count: there is a serious counter-argument that football delivers more health benefit to children than neurological risk, and that concussion scare campaigns are reducing youth participation — doing more harm than good. FIELD itself found better cardiovascular outcomes in former professionals. I have no balanced answer to that. I have only one conviction: benefit and risk coexist, and the only way to weigh them is to measure.

One ledger, and three things that can start now

Football heard through the folk-song lens taught me that the real folk hero is the person who keeps the fire burning for a bankrupt club. I think the same is true here: the person who keeps the record is the person who keeps the fire.

Three things, ordered from cheapest to most expensive.

First, a ledger. The VFF and club medical departments should open a neurological health file for every professional and academy player from age fifteen upward, updated each season: estimated headers in matches and training, recorded head impacts, days of rest after each impact. No expensive machinery required. A form and a person who signs it.

Second, a protocol. Mandatory removal from play for assessment when concussion signs appear, with a decision-maker independent of the head coach. In the V.League, the authority to substitute for medical reasons currently sits with the person who has a direct interest in the result. That is a structural conflict of interest, not an individual ethics problem.

Third, a limit. A cap on heading content per training week below under-12 and under-15 level, following Scottish and US guidance. This requires no further research. It requires a signature.

The total cost of all three, on my estimate, is below the transfer fee of an average V.League foreign signing. And if anyone objects that we lack the data to act, the answer is inside the structure of the problem: the cheapest action is to create the data.

One thing has stayed with me since rereading that 20 October item. Sarah Rafferty described how her father had been the carer for her grandmother when she had Alzheimer's, and then developed the disease himself not long after her death. She described one moment: he was driving and could not remember where he was going. Her family had language to name that, doctors to diagnose it, and a pharmaceutical company to fund the telling of it.

A Vietnamese footballer retires at 33 with an aching knee and no language at all to name what is coming for him twenty years later.

If a pharmaceutical company has to pay an actress to talk about Alzheimer's, how much does Vietnamese football need to spend before somebody starts counting the headers of an eleven-year-old at a residential academy?

The answer, as of today