The Biggest Missed Opportunity in Global Health
When education about smoking reaches its limits
Cigarette smoking still kills roughly seven to eight million people every year worldwide, making it one of the largest preventable causes of death in modern history.
For more than half a century governments have attempted to reduce this toll through public education campaigns, warning labels, taxation, and restrictions on smoking in public places. These policies have saved millions of lives and dramatically reduced smoking rates in many high-income countries.
Yet progress has slowed. In many regions smoking prevalence has plateaued despite widespread awareness of the risks. In much of the developing world it remains stubbornly high.
This raises a difficult question.
What if the greatest remaining barrier to reducing smoking-related mortality is no longer a lack of knowledge about the dangers of cigarettes, but the regulatory systems that govern nicotine markets?
When education reaches its limits
In a forthcoming paper I examine this possibility by modeling tobacco harm reduction from a different perspective. Rather than treating smoking primarily as a behavioral failure that can be corrected through education alone, the research approaches the problem as a market outcome shaped by institutional constraints (Bate, forthcoming).
For decades tobacco control policy operated on the assumption that smoking persisted largely because individuals were insufficiently informed about its dangers. That assumption was understandable during the early years of the tobacco epidemic, when the causal link between smoking and disease was still contested and tobacco companies actively sought to undermine emerging scientific evidence.
Today, however, the situation is very different. The health risks associated with cigarette smoking are among the most thoroughly documented facts in modern medicine. Surveys consistently show that the overwhelming majority of smokers understand that smoking causes serious illness and premature death.
Despite this widespread awareness, millions of people continue to smoke.
The persistence of smoking therefore cannot plausibly be explained simply by a lack of knowledge. Instead it reflects nicotine dependence, behavioral habit, social and economic stressors, and the difficulty many smokers experience when attempting to quit entirely.
Public-health models that assume smokers will stop once adequately informed about the risks overlook this reality. For many smokers the relevant choice is not a simple binary between quitting and continuing to smoke, but a more practical choice between continuing to smoke or switching to a less harmful substitute.
The emergence of harm reduction technologies
Over the past two decades a range of alternative nicotine delivery technologies has emerged that provides smokers with precisely this type of substitute. These include electronic cigarettes, nicotine pouches, snus and other oral nicotine products, as well as heated tobacco systems.
What distinguishes these technologies from traditional cigarettes is that they avoid combustion, the chemical process that produces the overwhelming majority of toxic substances responsible for smoking-related disease. By delivering nicotine without burning tobacco, these products dramatically reduce exposure to carcinogens and other harmful compounds.
Independent scientific reviews have consistently concluded that non-combustible nicotine products expose users to substantially lower levels of toxicants than conventional cigarettes (Royal College of Physicians, 2016; McNeill et al., 2020; Hartmann-Boyce et al., 2022).
In countries where such products have been allowed to develop within consumer markets, cigarette consumption has often declined at unusually rapid rates. Sweden provides perhaps the clearest example. The widespread adoption of snus and, more recently, nicotine pouches has coincided with one of the lowest smoking rates recorded in Europe. Japan has experienced a similarly rapid decline in cigarette sales following the introduction of heated tobacco products.
These experiences suggest that substitution away from combustible cigarettes, rather than abstinence alone, may represent one of the most important drivers of future reductions in smoking-related mortality.
Understanding harm reduction as a market process
The forthcoming research attempts to quantify this possibility by modeling tobacco harm reduction as a market-constrained adoption process (Bate, forthcoming). Instead of assuming that smokers will automatically switch to safer products simply because they exist, the model asks a more practical question: under what conditions are smokers realistically able to switch?
Three institutional conditions prove particularly important.
The first is legality. If non-combustible nicotine products are banned outright or restricted through regulatory frameworks that prevent meaningful market entry, smokers simply cannot access them through normal consumer channels.
The second is affordability. Even when safer products are legal, heavy taxation or regulatory compliance costs may raise prices to levels that make them uncompetitive with cigarettes.
The third is supply readiness. Cigarettes benefit from extremely well-developed global distribution networks, while newer nicotine products often depend on emerging retail channels and supply systems that may not yet operate at comparable scale.
These three conditions—legality, affordability, and supply readiness—jointly determine whether large-scale substitution away from cigarettes becomes feasible.
When the model incorporates these constraints and applies them to global smoking mortality estimates, the potential impact of tobacco harm reduction becomes clearer.
Under cautious assumptions about switching behavior, feasible substitution to non-combustible nicotine products could avert approximately 170,000 to 290,000 deaths annually worldwide. Under more ambitious but still realistic scenarios of adoption, the number of deaths prevented each year rises to roughly 580,000 to 970,000.
Over a forty-year period the cumulative impact becomes even more striking. Conservative estimates suggest that between six and thirty-four million premature deaths could be prevented globally if regulatory and market conditions allowed safer nicotine alternatives to compete effectively with cigarettes.
These estimates are deliberately conservative. The model focuses only on mortality and excludes additional benefits such as reduced secondhand smoke exposure or improvements in quality of life.
Even under these cautious assumptions, however, the potential public-health gains are enormous.
Regulation as the binding constraint
One of the most important findings of the modeling exercise concerns the relative importance of scientific uncertainty compared with institutional constraints.
When the model varies assumptions about the relative health risks of alternative nicotine products, the estimated number of lives saved changes only modestly. By contrast, changes in regulatory conditions produce dramatic differences in outcomes.
The central constraint on tobacco harm reduction therefore appears not to be scientific uncertainty about product safety but the regulatory environment that governs nicotine markets.
Across much of the world non-combustible nicotine products remain banned, heavily restricted, or subject to taxation regimes that significantly increase their cost relative to cigarettes. The model suggests that approximately 83 percent of low-income countries and more than half of lower-middle-income countries effectively block consumer markets for safer nicotine alternatives.
At the same time combustible cigarettes remain legal, inexpensive, and widely available.
The resulting market structure creates a paradox in which the most dangerous nicotine product remains the easiest for consumers to obtain.
Evidence from the United States
Earlier modeling work applying similar methods to the United States suggests that harm reduction could also generate substantial mortality reductions even in countries where smoking prevalence has already declined significantly.
In my previous research, we estimated that large-scale substitution away from cigarettes toward lower-risk nicotine products could avert millions of smoking-related deaths in the United States over the coming decades (Bate and Bardosh, 2025).
Although the precise number of lives saved depends on assumptions about switching behavior and product risk, the underlying conclusion remains consistent: enabling smokers to move away from combustible tobacco could produce extremely large public-health benefits.
Why harm reduction remains controversial
Despite this potential, tobacco harm reduction remains controversial within parts of the public-health community.
One explanation lies in the historical evolution of tobacco control policy. Early tobacco policies focused primarily on reducing exposure to smoke and encouraging smokers to quit. Over time, however, the normative objective of tobacco control shifted toward eliminating nicotine use altogether.
Within this framework products that continue to deliver nicotine, even if dramatically less harmful than cigarettes, are often viewed as threats rather than opportunities.
Some research groups have argued that harm-reduction arguments represent industry-driven narratives designed to undermine tobacco control efforts (Bath Tobacco Control Research Group, 2025). Critics of international health institutions have responded that official communications frequently conflate nicotine with smoking and exaggerate the risks of non-combustible products, potentially discouraging smokers from switching to safer alternatives (Bates, 2022; Zaruk, 2025).
Empirical studies suggest that such messaging may increase the proportion of smokers who believe vaping is as harmful as smoking, thereby reducing the likelihood that smokers will adopt lower-risk products (Svenson et al., 2022).
These disagreements reveal a deeper philosophical divide within public health between strategies aimed at eliminating nicotine use entirely and strategies focused on reducing the harms associated with smoking.
The largest missed opportunity in global health
Over the past half century tobacco control has achieved extraordinary successes. Smoking prevalence has fallen across much of the developed world, and awareness of smoking’s dangers is now nearly universal.
Yet the next phase of progress may require a change in strategy.
Education and deterrence have reached diminishing returns. The remaining challenge lies in enabling safer substitution at scale.
Allowing non-combustible nicotine products to compete with cigarettes under sensible regulatory frameworks could prevent hundreds of thousands of deaths each year and potentially tens of millions over the coming decades.
If regulatory systems continue to suppress these alternatives, one of the largest opportunities to reduce preventable mortality in modern history may remain unrealized.
References
Bate, R. (forthcoming) Saving Lives Across the Globe: The Limits of Smoking Harm Education and the Promise of Market-Driven Harm Reduction. SSRN Working Paper.
Bate, R. and Bardosh, K. (2025) Lives Saved Through Tobacco Harm Reduction in the United States. SSRN Working Paper.
Bath Tobacco Control Research Group (2025) Smoke and Mirrors: Unmasking Disinformation from the Tobacco Industry. University of Bath.
Bates, C. (2022) E-cigarettes and the WHO: Misrepresentation of evidence.
GBD 2019 Tobacco Collaborators (2021) Spatial, temporal and demographic patterns in smoking prevalence and attributable disease burden in 204 countries and territories. The Lancet.
Hartmann-Boyce, J. et al. (2022) Electronic cigarettes for smoking cessation. Cochrane Database of Systematic Reviews.
Lee, K. and Freudenberg, N. (2020) The political economy of tobacco control. Global Public Health.
McNeill, A. et al. (2020) Evidence Review of E-Cigarettes and Heated Tobacco Products. Public Health England.
Royal College of Physicians (2016) Nicotine Without Smoke: Tobacco Harm Reduction.
Svenson, M.R.E. et al. (2022) Conflicting public-health guidance and e-cigarette harm perceptions. Nicotine & Tobacco Research.
Zaruk, D. (2025) The WHO’s attack on reduced harm. The Firebreak.