One in Thirty Irish Adults Has a Gambling Problem — and the Research Finally Explains Why It Starts So Early

To contextualise that figure: it represents a prevalence rate of approximately 3.3%. In 2019, the measured rate was between 0.7% and 1%. The jump from under 1% to 3.3% is not explained by improved measurement alone, though improved methodology does account for some of the apparent increase. Professor Pete Lunn of the ESRI, who authored an earlier study that first documented the higher prevalence, described the 2023 findings that led to the revised estimate as a watershed moment — one that moved the public narrative from a framing in which problem gambling affected a small minority to one in which it affects a substantial portion of the adult population.

Understanding why that number is so much higher than previously reported, and what the January research adds to our understanding of how problem gambling develops, is the work this piece sets out to do.

What the January Research Actually Found

The ESRI Behavioural Research Unit's January study focused on a specific question that the prevalence research did not address. If we know how many adults have a problem, can we understand when and why it develops? The research design was built around childhood gambling exposure — whether people had gambled before the age of 18, what their parents' gambling behaviour looked like, and what attitudes their parents held toward gambling.

The findings are straightforward to state and considerable in their implications.

People who gambled before the age of 18 were almost twice as likely to suffer from problem gambling in adulthood. This held after controlling for social background, meaning the relationship is not simply a function of socioeconomic factors that might independently predict both early gambling exposure and adult problem gambling.

Having a parent who gambled increased the likelihood of adult problem gambling by approximately one third. Having a parent with positive attitudes toward gambling — treating it as normal, acceptable, fun — had a similarly large effect on the probability of developing a problem, even independent of whether the parent was a heavy gambler themselves.

The interaction effects are the most striking findings. People who both gambled as children and had a parent who gambled heavily were four times more likely to develop problem gambling than those with neither exposure. The compounding of risk factors is not additive — it is multiplicative. The child who grows up in a household where gambling is normalised and who engages in it themselves before the age of 18 is in a categorically different risk category from the child who has either exposure but not both.

Dr Shane Timmons, the study's author, summarised the findings clearly. "These results demonstrate that childhood experiences of gambling have damaging effects on people's lives as adults. Together with our best estimate that one in 30 adults in Ireland now struggles with problem gambling, these findings strengthen the case for regulation of gambling. We need to avoid normalising gambling among young people."

What 64% Means

One of the most striking data points in the study is not about adults who developed problems. It is about how many people in the sample had gambled before turning 18 at all. The answer is 64%. Nearly two thirds of the nationally representative adult sample reported gambling before they were legally old enough to do so.

The most common forms of childhood gambling reported were slot machines, scratch cards, horse or dog betting, and lotteries. These are not fringe activities. They are mainstream, heavily marketed, physically accessible forms of gambling that have been present in Irish public life for decades. Scratch cards are sold in newsagents and petrol stations. Bookmakers line high streets in every city and most towns. The Lotto is advertised across every media platform.

The 64% figure matters because of what the study found downstream of it. If almost two thirds of adults gambled before 18, and if childhood gambling exposure approximately doubles the risk of adult problem gambling, then a significant portion of the 3.3% problem gambling prevalence in the adult population has a traceable pathway through childhood exposure. This is not to say that every adult problem gambler was a child gambler — the causation is probabilistic, not deterministic. But it does mean that the population of adults who are currently experiencing gambling harm includes a substantial number for whom the behaviour was established before adulthood.

The policy implication the ESRI draws is explicit. The study recommends stricter regulation to protect children from gambling exposure, including better age verification, limits on gambling marketing, and regulation of products that appeal to children. The recommendation is grounded in the data and entirely consistent with what the research shows — but it is also worth noting what it means in practice. Better age verification in physical retail requires enforcement. Limits on gambling marketing during sports broadcasts requires political will to confront the commercial interests that fund sports sponsorship and broadcast rights. Regulation of loot boxes and other gambling-adjacent products that appeal to younger audiences requires engagement with the technology sector at a level Irish regulation has not yet reached.

The €5.5 Billion Question and Who Is Paying It

Total annual gambling spend in Ireland is estimated at €5.5 billion. The ESRI estimates that 28.3% of that figure is funded by problem gamblers — the approximately 130,000 people who currently cannot control their gambling. That means roughly €1.55 billion of annual Irish gambling revenue comes from people in a state of harm.

Problem gamblers spend on average more than €1,000 per month on gambling. The average net income in Ireland is approximately €2,996 per month. Problem gamblers are, on average, spending more than a third of average net income on gambling. These are not recreational spenders experiencing occasional excess. They are people whose gambling consumption is at a level that the ESRI categorises as disruptive and damaging to their finances, wellbeing, and social relationships.

The business model of the gambling industry is not designed around the 96.7% of gamblers who engage without developing a problem. Its revenue is disproportionately concentrated in the 3.3% who cannot stop. This is not a new observation — it has been documented across multiple jurisdictions and multiple periods of research. It is, however, a finding that takes on specific weight in the Irish context because it arrives at the same moment as the GRAI's regulatory framework is being built.

The question of whether a regulatory framework designed to protect consumers can be adequate when the industry's revenue is structurally concentrated in harm-related spending is a serious one, and it is not one that the regulatory architecture has yet fully addressed.

What the GRAI Is Doing and What It Is Not Doing

The Gambling Regulatory Authority of Ireland opened for licence applications on February 9, 2026. The GRAI was created by the Gambling Regulation Act 2024, which represents Ireland's first serious attempt at modern gambling regulation. The previous primary legislation, the Gaming and Lotteries Act, was from 1956 — written for slot machines in seaside arcades, as one observer put it, not for online platforms accepting payments from Irish users twenty-four hours a day.

The GRAI's Strategy Statement for 2025 to 2027 includes a specific commitment to protecting children and young people from gambling harm. The GRAI has published parental guidance in collaboration with HSE Addiction Services, developed specifically in response to the ESRI's January research. Annual inspection programmes are due to commence in July, and specialised enforcement units are planned for Q3.

These are concrete steps. They represent genuine progress from a regulatory environment that had, for decades, been described as a grey area by everyone who had reason to engage with it.

What the GRAI framework does not yet include is specific provisions for several of the highest-risk areas identified by the research. The framework's approach to online gambling advertising during sports broadcasts is still being developed. The approach to digital products that function as gambling for younger users — loot boxes in video games, social casino apps, in-game currency mechanics — is described in the Strategy Statement as requiring further research rather than as something currently regulated. The approach to offshore-licensed crypto casinos, which operate legally for Irish users under Curaçao or Anjouan licences without GRAI oversight, is similarly unresolved.

Anne Marie Caulfield, chief executive of the GRAI, said in response to the January research that it "provides clear evidence of the long-term potential harms from exposing children to gambling" and that it "reinforces the importance of a well-regulated gambling sector that protects children and those vulnerable to gambling harm." The sentiment is clearly genuine and the GRAI's stated priorities align with what the research recommends. The question is implementation pace and resource.

The Childhood Pathway and What It Means for Prevention

The ESRI's research, taken together with the prevalence data, suggests something specific and actionable about where gambling harm originates in Ireland. It does not begin primarily in adulthood, when a person makes a conscious choice to start gambling and finds they cannot stop. It begins much earlier, in households where gambling is normalised and in environments where it is physically and commercially accessible to children.

This means that the most effective prevention is not primarily about helping adults manage existing gambling problems, though that support matters and must be adequately resourced. It is about changing the environment in which children encounter gambling in the first place.

That environment is shaped by decisions that are currently made by government, by media organisations that accept gambling advertising revenue, by sports bodies that accept gambling sponsorship, by retailers who stock scratch cards at till height in shops where children are present, and by technology companies whose products blur the line between gaming and gambling for younger users. None of these decisions are the responsibility of the individuals who develop problem gambling later in life. All of them are changeable through regulatory and commercial choices that currently are not being made at the speed the research recommends.

Tony O'Reilly, a former post office manager who stole €1.75 million to fund a gambling addiction and who now works as a counsellor for people with similar problems, made a point in a February interview with the Irish Times that is worth setting out directly. The main age cohort of people coming to him for help, he said, has dropped over the last couple of years. He did not say this as good news. He said it as an observation that the problem is presenting earlier — that the people who need help for gambling problems are younger than they used to be.

The ESRI research provides the mechanism for that observation. If childhood gambling exposure doubles the risk of adult problem gambling, and if 64% of adults report having gambled as children, and if the forms of gambling available to children have expanded significantly in the digital era relative to what was available in previous generations, then the direction of travel is predictable. It will not reverse without the kind of structural changes to gambling's commercial and regulatory environment that the ESRI has recommended and the GRAI has acknowledged but not yet fully implemented.

One in thirty is the number we have now. Whether it becomes one in twenty-five or one in forty depends on decisions being made in government offices, corporate boardrooms, and regulatory buildings in 2026. The research has done its job — it has provided the evidence and the mechanism. What happens next is a political and commercial choice.