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New research suggests that childhood trauma carried by fathers long before their own children were even born may still be shaping how those children behave today. A study tracking hundreds of American families has found that children of fathers who experienced adversity growing up are noticeably more likely to show behaviour problems in their early years, a finding researchers say deserves far more attention than it currently gets.
New Study Reveals the Scale of the Link
The study, led by Natalie Grafft at Boston College’s School of Social Work and published in the American Journal of Preventive Medicine on 24 June, followed 893 fathers across the United States with children aged between one and six. Fathers were asked about adverse experiences both inside the home, things such as growing up around mental illness, substance misuse, incarceration or abuse, and in the wider community, including discrimination, bullying or unsafe neighbourhoods. Children of fathers who reported even one such experience at home were 28 per cent more likely to have behaviour problems than children whose fathers reported none, and the figure rose to 33 per cent for fathers with two or more. Community based adversity showed a similar climb, with a 32 per cent higher likelihood for one experience and 40 per cent for two or more.
Fathers’ Mental Health as the Missing Link
What makes the study genuinely useful is that it does not stop at correlation. Fathers’ depressive symptoms accounted for more than a third of the link between childhood adversity at home and their children’s behaviour problems, and over a quarter of the link tied to community based adversity. In plain terms, a father’s mental health carries a measurable piece of his own childhood trauma forward into his child’s daily life. The researchers point to an obvious and fairly simple fix, screening fathers for depression during routine paediatric visits, something that rarely happens compared with how often mothers are asked.
Childhood Trauma and the Path to Substance Use
None of this exists in isolation. Childhood trauma has long been tied to substance use later in life, and the scale of that link is difficult to ignore. One frequently cited study found that adults who had four or more adverse childhood experiences were five to twelve times more likely to use illicit drugs than adults with none. The explanation is not that trauma makes people reckless. Repeated early adversity actually rewires the body’s stress response, leaving the brain’s threat detector overactive while the part responsible for weighing consequences loses some of its influence. Alcohol, opioids and stimulants can each become an attempt at self-medication for a nervous system that never learned how to settle on its own.
Why Treatment Often Falls Short
This is also why treatment so often falls short for people carrying unresolved childhood trauma. Trust is usually the first thing damaged by early adversity, and for many people entering treatment feels less like safety and more like a return to old dynamics they learned to fear. People with concurrent PTSD and a substance use disorder tend to leave treatment earlier and relapse more often, particularly when something in the process triggers old wounds. Given that more than 46 million Americans aged 12 or older met the criteria for a substance use disorder in 2021 alone, according to the National Survey on Drug Use and Health, the scale of unaddressed childhood adversity behind that figure is considerable.
Clinicians Are Beginning to Adjust
Clinicians are beginning to adjust. Screening tools such as the ACE questionnaire and the Trauma Screening Questionnaire are increasingly used early in treatment, and integrated approaches such as Seeking Safety and trauma adapted cognitive behavioural therapy have shown better outcomes than treating trauma and substance use separately. A training session held earlier this year at Johns Hopkins Bayview, led by addiction psychiatrist Dr Denis Antoine II, drew clinicians, counsellors and peer specialists specifically to work through how childhood trauma complicates recovery, a sign the field is taking the connection seriously.
A Right Enshrined in International Law
There is also a legal dimension worth remembering. Article 33 of the United Nations Convention on the Rights of the Child is the only clause in the entire convention that names drugs directly, requiring signatory states to take legislative, social and educational steps to protect children from illicit drugs and from being drawn into their production or trafficking. Exposure to drug use environments is itself one of the original seven categories used to measure childhood adversity, and it tends to travel alongside, and often worsen, the others.
What This Means Going Forward
Taken together, the picture is one of childhood trauma quietly passing from one generation to the next through pathways that are only now becoming visible in the data. Screening fathers as routinely as mothers, treating trauma and substance use as one connected story rather than two separate problems, and taking early exposure seriously as a matter of protection rather than an afterthought, all point in the same direction. The two year old still crying over a spilled cup of juice may be telling researchers something they are only just beginning to hear.
By Dalgarno Institute
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Australia ran the most successful anti-smoking campaign the world had ever seen. Not one of the most successful, the most successful. We reduced daily tobacco consumption from around 52 per cent of all Australians aged 16 and over in the late 1940s down to around 13 per cent just a few years ago. That is not a small achievement. That is decades of disciplined, consistent, evidence-based public health work paying off in one of the most sustained behaviour change campaigns any country has ever managed. And then we watched it get systematically undermined. (More: WRD News)
PREVENTING YOUTH SUBSTANCE USE: What The Latest Research Demands Of Policy, Schools, And Communities
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INTRODUCTION: A Crisis Hiding In Plain Sight
Two numbers define the scale of the problem. In the United States alone, more than 100,000 people die from opioid-related overdoses every year. Among 15-year-olds in England, 44 per cent have been offered drugs and nearly a quarter have used them. These figures represent the downstream consequences of inadequate prevention, the results of treating adolescent substance use as inevitable, marginal, or somebody else’s problem.
The reality, confirmed by multiple research bodies, is that substance use disorder is neither inevitable nor untreatable. Historical evidence demonstrates that adolescent and young adult use rates were at their lowest in the period 1900 to 1950. The sharp rise that began in the 1960s reflects cultural, social, and environmental conditions — conditions that can, in principle, be shaped by deliberate policy and community action.
Yet the systems designed to address this problem are under severe and worsening strain. Treatment infrastructure in underserved communities is overwhelmed. The addiction counselling workforce is shrinking relative to demand. School drug education continues to be delivered inconsistently, often as a single session, and frequently without the skills-based content that research shows actually works. And the research community specifically focused on adolescent substance use has, over two decades, dispersed into other areas.
This White Paper argues that prevention is not simply the most compassionate response to this crisis. It is the most strategically rational one. When treatment systems cannot meet demand, and when early onset of substance use disorder is among the strongest predictors of lifelong harm, the economic, social, and public health logic for investing upstream is overwhelming.
Also see:
- AOD Primary Prevention & Demand Reduction Priority Primer: TASKING THE NATIONAL HEALTH STRATEGIES FOR COMMUNITY WELL-BEING
- Prioritizing Abstinence-Based Prevention, Regulation, and Recovery to Reduce Substance-Related Harm and Promote Mental Health at a Population-Level
- Permission – The Most Effective Drug Pusher
- Social Determinants & Substance Use – Beyond the Policy ‘Silo’ Pragmatics
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Synthetic opioids are changing overdose statistics worldwide. Cannabis legalisation has shifted public views on risk, even as potency keeps climbing. Vaping has introduced a new generation to nicotine dependence, often through products that look harmless. Amid these shifts, we keep losing sight of one principle: drug use is not inevitable. It is a preventable behaviour we can address at the root. That starts with drug prevention and law enforcement working as one system, not two.
As a Judicial Educator, I watch this play out daily in courtrooms, diversion programmes, and supervision orders. When prevention fails, the justice system becomes the backstop. We should stop treating that backstop as a last resort. Instead, we should treat it as part of one connected system, where drug prevention and law enforcement work side by side rather than against each other.
Prevention vs Reaction: What the Evidence Shows
Applied Prevention Science International (APSI) and similar organisations model substance use this way. They see it as the product of layered influences: family, peers, school, neighbourhood, regulation, and a person’s own development. This framework points to clear moments for intervention, well before someone ever encounters a substance, let alone develops dependence.
The evidence for early, universal prevention is strong. When the United States raised the legal drinking age to 21, alcohol related traffic deaths among young drivers dropped by an estimated 16%. Regulatory enforcement did more than punish. It protected lives, and it sent a clear message: underage use carries real consequences.
Prevention science offers policymakers a clear choice. Reaction manages harm after the fact, often at a far higher human and financial cost. Prevention shrinks the number of people who ever need that reaction. UTRIP, the Universal Treatment and Recovery Initiative Program, builds on this same continuum. It treats recovery not as competition for prevention, but as the next step when prevention has not reached someone in time.
When Harm Reduction Loses Its Way
Clinical harm minimisation has a real and defensible place. Overdose recognition training, naloxone access for first responders, and acute medical stabilisation are all life preserving steps within a treatment pathway. No serious prevention advocate disputes their value in an emergency.
The concern starts when harm reduction stops being a safety net and becomes a policy philosophy instead. At that point, it treats ongoing use as fixed and permanent, rather than a path we can change. When messaging frames use as simply a personal choice deserving tolerant accommodation, three things tend to follow. Prevention messaging to young people gets muddled. The social signal about real risk weakens. And the urgency to pursue abstinence based recovery fades, because the framework no longer demands it.
Genuine harm minimisation asks one question: how do we keep this person alive long enough to recover? Ideologically driven harm reduction too often stops there. It never asks the second half of that question. The distinction matters for how courts, schools, and clinicians design their work. Accommodation without a recovery pathway is not compassion. It is policy drift.
The Protective Role of Law Enforcement
We too often cast law enforcement as the opposite of public health. In reality, when properly integrated, it becomes one of public health’s most consistent allies. Police science and prevention science are both multidisciplinary fields chasing the same outcome: community wellbeing. Design drug prevention and law enforcement as one connected system, not separate efforts. Then enforcement of regulatory law, including minimum age limits, supply controls, and impaired driving statutes, lands squarely within the macro level environment. Prevention science marks this environment as a critical point of intervention.
In schools, officers working alongside teachers, counsellors, and parents build a sense of safety. That safety helps young people bond with their school, a protective factor linked to less risk taking. In courts, diversion and supervision pathways give the justice system real leverage. They can mandate the structure, accountability, and treatment access that voluntary engagement alone often fails to secure. Removing or softening that leverage does not make people safer. It removes one of the few remaining incentives toward recovery.
Rebuilding a Prevention Centred Framework
A genuinely protective system needs three things. Policymakers must fund universal prevention at the same scale as treatment. Courts must maintain accountability structures that pair consequence with a clear recovery pathway. Educators and clinicians need training to tell emergency harm minimisation apart from policies that quietly normalise continued use.
Community systems should measure success differently too. Count the number diverted from ever starting. Count the number who return to a substance free life. Do not count how many people we simply sustain in use.
Substance use is preventable. Policymakers, courts, and communities do not need to manage decline gracefully. They need to recommit to the evidence. A renewed commitment to drug prevention and law enforcement, paired with consistent enforcement and recovery oriented accountability, remains our most effective and most humane response.
(Source: WRD News)
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As Vietnam launches its toughest anti-drug campaign yet, it is choosing its model. And it isn’t the one its neighbour just abandoned.
Through June, Vietnam ran its 2026 Anti-Drug Action Month under a blunt national theme: a shared determination to build a drug-free commune. Provincial police forces launched simultaneous high-intensity operations to suppress drug crime and screen users. Hanoi also convened China, Laos and Myanmar to agree a three-month joint crackdown along their shared borders, running through to mid-September.

What is striking is how far the campaign reaches beyond policing. This is not a crackdown the public is asked merely to tolerate; it is one they are mobilised to join. The month built in public rallies, community running events, artistic programmes, exhibitions and digital campaigns, alongside anti-drug education in schools and the active involvement of community leaders, religious figures and local residents. Communes across the country have staged their own launch ceremonies, declaring local determination to become drug-free. Running underneath the enforcement is a recovery arm too, with state-backed credit programmes to help former drug users access vocational training, employment and reintegration. The framing throughout is that drug prevention is a task for the whole of society, not just the police, and on the ground the campaign appears to enjoy genuinely broad support. Hard outcome data is another matter, and Vietnam’s own figures are not independently audited, but the popular backing for the approach is not in doubt.
This is a country leaning further into prohibition, not away from it. And it is doing so at the precise moment much of the world is supposedly moving the other way. To understand the bet Vietnam is making, it helps to look at the two models now on offer in its own neighbourhood, and at what happened to the country that tried the other one.
A Region at a Fork in the Road
Vietnamese officials have been explicit. They do not accept the global trend toward legalising drug use, and they remain committed to a long-term vision of a drug-free region. Vietnam is one of the toughest jurisdictions in the world on the supply side, retaining capital punishment for serious trafficking offences. That is a dimension of its approach which draws sustained international criticism, and one worth naming honestly rather than glossing over.
Where does that leave Vietnam in the regional picture? Firmly in the same camp as Singapore and Japan, and well away from the road Thailand has just retraced.
Singapore draws a deliberate line between two ideas. One is “harm reduction”, which manages the damage once drugs are already embedded in a society. The other is what it calls “harm prevention”: keeping that damage from taking root in the first place. As one senior Singaporean minister put it, some countries reach a point where drugs are so pervasive that they have little choice but to let them circulate. Singapore’s stated aim is to never arrive there at all. Japan sits in much the same camp. It has some of the lowest drug-use rates in the developed world, underpinned by strict laws and a strong cultural disapproval that does work no statute can.
The Thai Cautionary Tale
The alternative model is not hypothetical. Thailand tried it, and then reversed it.
When Thailand removed cannabis from its narcotics list in 2022, becoming the first country in the region to do so, the industry exploded rapidly. By the time the brakes went on, the country had registered well over 18,000 cannabis shops, with the market valued at more than a billion US dollars. The problem, by near-universal agreement, was that decriminalisation arrived without a regulatory framework to govern it. The result was not a tidy, medicalised market but a fast, largely unregulated free-for-all.
Thai authorities and local reporting increasingly pointed to the downstream costs. They flagged rising cannabis-related poisonings, and growing concern about dependence among young people. In June 2025, the government reversed course. Cannabis flower was reclassified as a controlled herb, recreational use was recriminalised, and sales were restricted to patients holding a valid medical prescription. Thousands of the shops that opened during the boom soon had to close.
For prevention advocates, the lesson was not really about cannabis itself. It was about commercialisation. Once an industry is built on normalising a substance, the incentives all run one way, and the public-health bill arrives later, payable by the young.
Why the Stakes Are Not Abstract
(Source: Vietnamese state media)
Vietnam’s hard line can read as severe from a distance. Up close, the trade it is fighting is anything but abstract, as a recent killing on the streets of Ho Chi Minh City made clear.
In May, a senior figure in the so-called Coconut Cartel, a western Sydney syndicate, was shot dead outside a restaurant in a busy HCMC dining precinct. The dead man, 24-year-old Lorenzo Lemalu Tovia, was an Australian; a second Sydney man was wounded in the same attack. Street-level footage of the killing, captured on the cheap phones some locals wryly call “rice-powered cameras”, spread quickly across the internet. Two Samoan men, Joseph Vaa, 27, and Steve Tofa, 23, later confessed to the shooting on Vietnamese television and now face a potential death penalty.
The cartel itself had just been all but dismantled in Australia, where NSW Police blamed it for a long run of shootings, kidnappings and attempted murders driven by a turf feud with a rival network. The violence, in other words, did not stop at a border. It followed the trade all the way to Vietnam’s doorstep. This is the reality a drug-free-region policy is built to keep out, and the reason Vietnam is unmoved by arguments that the war on drugs is simply unwinnable.
The Enforcement Reflex, in Sydney and Hanoi
Australia’s response shows how alike the instincts are at both ends of this trade. Days after the cartel arrests, the NSW Parliament passed the Crimes Legislation Amendment (Organised and Gang-related Crime Reforms) Bill 2026. It is a serious piece of law. A new aggravated offence now covers the “kill cars” that organised crime uses and then torches to destroy evidence. The window for authorities to seize assets of people subject to Drug Trafficker Declarations has been extended from one year to five. Bail conditions change so that courts can weigh an accused person’s organised crime links, with specific measures targeting the recruitment of children to do the dangerous work.
These are sensible reforms, and they deserve support. So does much of Vietnam’s enforcement effort. But every one of these tools, in Hanoi as in Sydney, responds to harm that has already happened.
By the time a cartel is dismantled, the damage is done. The young person recruited into a kill car has already been recruited. The community that lived under the shootings has already lived under them. Vietnam can run the toughest supply-side regime in the region. New South Wales can pass the firmest laws in a decade. Both will still be arriving after the fall.
The NSW reforms name the recruitment of children as a specific target, and that is the detail that should focus everyone’s attention. Networks like this do not run on hardened veterans alone. They run on a steady supply of young people with little to lose. Money, status and a sense of belonging they could not find anywhere else draw them in. The two young Samoan men who confessed to the Ho Chi Minh City killing fit the pattern exactly: reportedly ordinary workers caught up in something far larger than themselves. The flashy side of this world is now lived out in public, on social media, for an audience of teenagers who are watching closely. There are good reasons not to reproduce or glamourise any of it. But it would be naive to pretend it is not a recruitment tool. It is.
Prevention Is the Half That Lasts
This is where Singapore’s distinction earns its keep, and where drug prevention proves its worth. There is a real difference between a society that prevents harm and one that has resigned itself to reducing it. That difference takes shape upstream, long before a court or a customs scanner ever gets involved.
Across decades of this field, the evidence keeps pointing to the same protective factors. A young person who has belonging, identity, meaning and a trusted adult in their corner is far harder to recruit than one who has none of those things. The cartel understands this better than most prevention campaigns do. It offers a counterfeit version of all four. Belonging through the crew. Identity through the reputation. Meaning through the mission. Mentorship through the older operator who takes an interest. To a teenager with none of those things in place, that offer is not stupid. It is logical. Prevention works when the real version reaches them first, through family, school, sport, faith and community, before a recruiter does.
We use a phrase a lot at the Dalgarno Institute: the difference between scaffolding and foundations. Tough laws and big seizures are scaffolding. They can hold a structure up for a while, and they matter. Foundations are slower, harder and far less photogenic. The family, the community, the sense of purpose that means a young person never finds the cartel’s offer attractive in the first place. Scaffolding without foundations only ever holds for so long. Dismantle one network and, where the underlying conditions are unchanged, another fills the vacuum, usually faster than the last one took to build.
The Work That Never Makes the News
Vietnam has chosen its model, and on the evidence of Thailand’s reversal it has chosen well. Keeping a drug culture from taking root is cheaper, kinder and more effective than dismantling one after it has formed. But the hardest part of that choice is not the enforcement that makes the headlines. It is the prevention that does not.
The Coconut Cartel is gone, and Vietnam’s borders are a little tighter this month. Both are worth something. But whether anything takes the cartel’s place, in Sydney, in Ho Chi Minh City or anywhere else, depends far less on the next law or the next crackdown than on the quiet, unglamorous work of drug prevention. Ultimately, the conversations in lounge rooms, classrooms and community halls that never make the news, but decide everything that does
(Source: WRD News)
- Child Care Crisis & Chaos – The ‘Substance’ in the System! Why Prevention Must be the Priority
- Protecting Your Mind and Body: The Powerful Benefits of Substance Abstinence
- Thirty Years of Watching and Waiting: How Australia’s Drug Monitoring System Lost Sight of Prevention
- Why the Spaces Around Young People Matter More Than We Think in Preventing Drug and Alcohol Use