The evidence on vaping is getting stronger, but the message reaching smokers is becoming less clear.
If you asked UK smokers whether vaping is less harmful than smoking, you might reasonably expect most of them to know the answer.
Apparently not.
According to Action on Smoking and Health's 2026 survey, 52% of adults who smoke now believe vaping is as harmful as, or more harmful than, smoking.
That's more than an unfortunate misunderstanding. It's a fairly spectacular failure of communication.
Vaping isn't harmless, and nobody responsible should pretend that it is. But when smokers no longer understand that switching completely from cigarettes to vaping can substantially reduce their exposure to harmful toxins, we have a problem. Because if you think the alternative is every bit as bad as the thing you're already doing, why would you bother changing?
And the timing of this particular conversation couldn't be more revealing.
This week, an updated Cochrane review examining the evidence on vaping for smoking cessation concluded that there is high-certainty evidence that nicotine vapes help more people stop smoking than traditional nicotine-replacement therapy such as patches and gum.
Meanwhile, a new paper in JAMA, produced by a working group within the international Society for Research on Nicotine and Tobacco, has recommended that US clinicians actively include nicotine e-cigarettes when discussing evidence-based smoking cessation options with patients.
So, at almost precisely the moment that smokers' understanding of vaping appears to be heading in the wrong direction, the evidence supporting its effectiveness as a quitting tool is becoming stronger and the clinical conversation around it more pragmatic.
How, after years of the UK championing vaping as a smoking cessation tool, did we manage to get here?
We've become very good at talking about the risks of vaping...
Over the last few years, the public conversation around vaping has changed dramatically.
Youth vaping. Disposable vapes. Illegal products. Environmental waste. Bright colours. Flavours. Packaging. High street vape shops.
These are all legitimate subjects for debate and, in some cases, regulation. But somewhere along the way, the conversation became so dominated by what we don't want vaping to be that we've become strangely reluctant to talk about what it was supposed to be for in the first place.
Helping adults stop smoking.
That isn't some outdated claim from the early days of e-cigarettes. The NHS still recommends nicotine vaping as one of the most effective tools available for quitting smoking, and the evidence supporting that position has just become stronger.
Published in August 2026, the latest update to Cochrane's living systematic review examined 80 randomised controlled trials involving 29,861 participants, including nine new trials. It found high-certainty evidence that nicotine vapes increase smoking quit rates compared with nicotine-replacement therapy. In practical terms, Cochrane estimates around four additional people successfully quitting for every 100 using nicotine vapes rather than NRT.
That matters because this isn't one favourable vaping study being treated as the final word. Cochrane systematically assesses the wider body of evidence, and this review is continually updated as new research becomes available.
So while public confidence in vaping as a quitting tool appears to be deteriorating, the evidence supporting its effectiveness has actually been getting stronger.
There's an irony there that would be quite funny if the consequences weren't so serious.
...while the smoking part of the story quietly disappears
This is where the language shift really matters.
Increasingly, vaping is discussed as though it exists in isolation. Every potential risk is examined against an imaginary benchmark of complete harmlessness rather than against the product adult smokers are actually being encouraged to replace.
Cigarettes.
That's a rather important distinction.
The NHS is clear that vaping isn't risk-free, the long-term effects aren't yet fully known, and people who don't smoke - particularly children and young people - shouldn't start vaping. Cochrane continues to call for longer and larger studies to evaluate potential harms too.
That's how evidence is supposed to work. Uncertainty isn't concealed simply because it makes the message less convenient.
But uncertainty about the long-term effects of vaping shouldn't somehow be transformed into uncertainty about whether smoking is more harmful.
Cigarettes release thousands of chemicals when tobacco burns, many of them poisonous and up to 70 known to cause cancer. Most of the harmful chemicals in cigarette smoke, including tar and carbon monoxide, aren't present in vape aerosol, and switching completely reduces exposure to toxins associated with cancer, lung disease, heart disease and stroke.
Vaping can therefore be neither harmless nor as harmful as smoking.
Both things can be true at the same time.
You'd be forgiven for thinking that had become a surprisingly controversial concept.
Misinformation loves a missing comparison
We've written before about the peculiar way vaping research travels from study to headline to social media post.
"Vaping causes..."
"Study links vaping to..."
"Experts warn that vaping..."
By the time the story reaches Facebook, X, TikTok, or a tabloid headline, the details that help someone understand what the research actually means may be long gone.
Who was studied? What product was used? Was the research identifying an association or proving causation? Were participants former smokers? Were they still smoking as well as vaping? Was the comparison with cigarettes - or with somebody who does neither? And was the product even comparable with a legal, regulated UK vape?
Those aren't nit-picking technicalities. They're the difference between useful information and a frightening headline with the important bits removed.
Social media gives the latter an enormous advantage.
The business model of most social platforms is built around attention. Content that makes us stop scrolling, click, comment, argue or share is valuable, and outrage, fear and surprise are particularly good at generating those reactions. A sober explanation of relative risk has a rather harder job competing with "VAPING CAUSES CANCER" in capital letters over a photograph of somebody coughing into a hospital gown.
The original research doesn't even have to be false. Quite often it isn't. It's what happens afterwards.
A study identifies a possible association requiring further investigation. A news story gives it a more dramatic headline. Somebody screenshots the headline without the article. A social media account adds its own interpretation. Thousands share that version, and before long a cautious scientific finding has completed an impressive game of digital Chinese whispers and emerged as established fact.
Sometimes the distortion is deliberate. Sometimes it's careless. Sometimes it's simply what happens when complicated science meets a format designed to earn a click in half a second.
Correcting it is considerably less exciting.
"Actually, the study doesn't quite say that, and there are several important limitations you need to understand" isn't likely to travel with quite the same enthusiasm.
There's another complication: repetition creates familiarity. A smoker doesn't need to believe every alarming vaping story they encounter. Repeatedly seeing vaping associated with cancer, heart disease, lung damage or some newly discovered danger can be enough to leave the general impression that there must be something in it.
And once a claim embeds itself in the public consciousness, apparently it can take up permanent residence there.
We're still seeing people confidently blurting out "popcorn lung!" in comment sections as though they've just delivered the decisive argument against vaping, years after the claim was debunked. The NHS is sufficiently tired of it that its own vaping guidance explicitly addresses the myth: vaping does not cause popcorn lung, and diacetyl - the chemical associated with the condition - is banned as an ingredient in UK-regulated nicotine vapes.
Yet there it is. Still being typed. Still being liked. Still being passed from one comment section to another with the absolute confidence that only information nobody has bothered to check can apparently inspire.
That's the frustrating thing about misinformation. The evidence can move on, and the original claim can have been corrected years ago, but the catchy version survives.
It's also why "fake news" doesn't quite describe the whole problem. Much of what misleads people isn't completely fabricated. It's genuine information stripped of context, preliminary findings presented as settled science, relative risks without absolute risks, association mistaken for causation, or a headline that technically bears some relationship to the research beneath it while leaving the reader with an entirely different impression.
Once that simplified version is loose on social media, the careful explanation is already playing catch-up.
The contrast with the latest Cochrane review is rather telling: 80 randomised controlled trials, nearly 30,000 participants, with researchers systematically assessing the quality and certainty of the evidence and updating their conclusions as new studies become available.
All extremely useful.
Also rather difficult to squeeze into six angry words on a meme.
And that's really all misinformation needs to achieve. It doesn't have to convince smokers that every frightening claim is true. It only has to create enough doubt that sticking with the cigarettes they already know begins to feel like the safer bet.
But are we arguing about evidence - or values?
Another layer of this debate deserves more attention.
An editorial published alongside the new JAMA recommendations, written by smoking-cessation researcher Jamie Hartmann-Boyce, frames part of the controversy around vaping as a need to distinguish evidence from values.
It's a useful distinction, because what exactly are we trying to achieve?
If the objective is that nobody should consume nicotine at all, then a smoker replacing cigarettes with a vape while continuing to use nicotine can be portrayed as a disappointing outcome: one dependence has simply replaced another.
If the objective is to dramatically reduce the disease and premature death caused by smoking, the same outcome looks rather different.
That doesn't make concerns about nicotine illegitimate. It means we should be honest about when we're discussing evidence and when we're making a value judgement about what we think somebody's ideal behaviour should be.
There's a puritanical streak that occasionally creeps into conversations about smoking cessation, where quitting only seems to count as a proper success if the smoker gives everything up, preferably while finding the whole experience suitably unpleasant.
But harm reduction has never really worked like that.
Seat belts don't make driving harmless. Condoms don't eliminate every risk associated with sex. Sunscreen doesn't make UV exposure good for you. We accept harm reduction in countless areas because reducing a serious risk is worthwhile even when we can't remove every risk - or every behaviour - completely.
It's worth asking why nicotine should require a completely different philosophical standard.
The important question for somebody who smokes isn't whether vaping represents an immaculate, risk-free lifestyle choice. It's whether it offers a substantially less harmful alternative to continuing to inhale cigarette smoke.
And that distinction between evidence and values matters enormously when we're deciding what smokers should be told.
The clinical conversation is shifting too
The new JAMA recommendations add another interesting dimension.
They're aimed at clinicians in the United States, so they aren't UK clinical guidance. But they come from a working group within the international Society for Research on Nicotine and Tobacco and recommend that e-cigarettes be included alongside other evidence-based smoking cessation treatments when clinicians discuss options with patients.
Perhaps more significantly, they reject the idea that an adult smoker should necessarily have to try and fail with conventional medication before being supported in using an e-cigarette. If, after discussing the risks and benefits, they prefer vaping as their route away from cigarettes, the priority is helping them stop smoking.
That's a rather refreshingly practical way of looking at it.
Because smokers aren't research subjects moving neatly through an approved flowchart.
They're people, and the cessation method that works is ultimately the one they're prepared to use successfully.
Nor does quitting always begin through a formal medical pathway. Sometimes somebody walks into a vape shop because their partner switched. Sometimes they try a friend's vape. Sometimes they buy one without having firmly decided to quit at all, smoke fewer cigarettes as a result and eventually discover they're not smoking any.
Public health tends to like interventions that look like interventions. Real life is considerably messier.
The official message hasn't disappeared. It's just becoming harder to hear.
Perhaps the strangest part of all this is that the underlying evidence hasn't suddenly reversed.
Quite the opposite.
The NHS still presents vaping as a quitting tool. Cochrane now reports high-certainty evidence that nicotine vapes outperform traditional NRT for smoking cessation. An international group of nicotine and tobacco researchers is recommending that US clinicians incorporate e-cigarettes directly into evidence-based cessation discussions.
And UK Government documents continue to recognise that vaping is less harmful than smoking. Even the current consultation on further vaping restrictions acknowledges both the lower relative harm of vaping and the role flavours can play in helping adult smokers quit.
Yet you'd struggle to guess much of that from the wider conversation.
Instead, political and media debate has become overwhelmingly focused on restriction: what vaping products should look like, what flavours can be called, where they can be displayed, how they can be promoted and how appealing they might be to children.
Protecting young people is a perfectly legitimate objective. But communication has consequences. If virtually everything the public hears about vaping is framed around reducing its visibility, restricting its appeal and warning about its risks, we probably shouldn't be astonished when adult smokers conclude that it must be every bit as dangerous as cigarettes.
You can't whisper the harm-reduction message and shout everything else, then wonder why people only remember the shouting.
And then there's the vape shop problem
We've recently looked at the increasingly loaded way politicians and commentators talk about vape shops.
Once, a specialist vape shop was fairly easy to understand: somewhere an adult smoker could explain what they smoked, get advice about nicotine strength and equipment, and leave with something intended to help them replace cigarettes.
Somewhere along the line, "vape shop" acquired rather different baggage.
Now the phrase is regularly bundled together with declining high streets, youth vaping, illegal products and "antisocial" businesses, as though every legitimate specialist retailer is simply one Trading Standards raid away from revealing its true colours.
The NHS, meanwhile, still advises smokers that a specialist vape shop is somewhere they can go for advice about devices and e-liquids.
There's quite a disconnect there.
Bad retailers exist. Illegal products exist. Retailers selling to children deserve enforcement, and responsible businesses have every reason to want them removed.
But making the entire specialist sector sound inherently dubious also risks making smokers wary of places where they can receive practical support that may determine whether switching actually works.
A supermarket shelf can't ask how many cigarettes you smoke, tell you that the nicotine strength you've chosen is probably nowhere near high enough, or explain why the device you bought on impulse isn't satisfying your cravings.
A knowledgeable person can.
And if we're prepared to recognise that smoking cessation doesn't always begin in a doctor's surgery, perhaps we should be rather more careful about casually discrediting one of the other places where it can begin.
Protecting children and informing smokers shouldn't be competing objectives
This is where the debate too often becomes unnecessarily binary.
Arguing that smokers should understand the relative risks of vaping isn't an argument for encouraging children to vape. Questioning whether a restriction might make switching harder for adults isn't the same as opposing regulation. And recognising vaping's role in harm reduction doesn't require anyone to claim it's completely safe.
We can protect children from nicotine addiction and make sure adults who smoke receive accurate information about less harmful alternatives. A sensible public health strategy rather depends on our ability to do both.
The Government itself appears to recognise this balancing act. Its current consultation talks about making vaping products less appealing to children while still allowing them to remain effective quit aids for adult smokers.
The difficult bit is making sure the second half of that sentence doesn't disappear from public view.
Because when one side of the message is repeated loudly and constantly while the other is buried somewhere in the small print, it shouldn't come as much of a surprise when public understanding reflects the louder version.
Because smokers aren't making decisions in an information vacuum
There is something deeply frustrating about reaching a point where the evidence supporting vaping as a smoking cessation tool is becoming stronger while smokers' understanding of its relative risk appears to be moving in precisely the opposite direction.
Smokers don't make decisions based on systematic reviews they've never read, or government guidance buried several clicks into a website. They make them based on the information that actually reaches them: headlines, political language, conversations, social media posts and the general impression created by years of public debate.
And right now, that impression is badly distorted.
Nobody needs to persuade smokers that vaping is harmless. Nor should anybody who doesn't smoke be encouraged to start. But those qualifications shouldn't obscure the comparison that matters for somebody who currently smokes.
Is continuing to smoke more harmful than switching completely to vaping?
The NHS says yes. UK Government policy recognises the distinction. The latest Cochrane review finds high-certainty evidence that nicotine vaping helps more people quit than conventional NRT. And an international group of tobacco and nicotine researchers is telling clinicians that vaping deserves a place in evidence-based conversations with smokers who want to quit.
The evidence isn't becoming less convincing. The message is becoming less clear.
We should be clearer about what we're trying to achieve. If the goal is a world in which nobody ever consumes nicotine, that's one conversation. If the immediate public health goal is preventing disease and premature death among people who currently smoke cigarettes, that's another.
We shouldn't substitute one for the other and call it science.
Because if our attempts to protect people from the risks of vaping create enough fear and confusion that smokers decide they're better off sticking with cigarettes, we haven't successfully communicated risk.
We've spectacularly failed to communicate relative risk.
And for the millions of UK adults who still smoke, that's not merely a problem with the messaging. It could influence whether they ever try to quit.