Why Society Denies the Evidence About Alcohol

The evidence that alcohol is a Group 1 carcinogen — as directly carcinogenic as asbestos and formaldehyde — has been settled science for decades. The MCDA harm rankings have repeatedly shown alcohol to be the most destructive substance known. The UK saw 9,809 alcohol-specific deaths in 2024, a 42 percent increase from 2019. And yet society's response has been, at best, a collective shrug. Why? [Festinger (1957)]

The first psychological mechanism is cognitive dissonance, a concept introduced by Leon Festinger in 1957. When people hold two contradictory beliefs — "I am a good person who makes sensible choices" and "I regularly consume a substance that causes cancer" — the tension is uncomfortable. The easiest resolution is not to change the behaviour but to dismiss the evidence. Alcohol is not that bad. Everything causes cancer these days. Moderate drinking is actually good for you. The industry-funded myth that red wine is heart-healthy persists not because the science supports it — it does not — but because it resolves the dissonance. [Festinger (1957)]

The second mechanism is optimism bias, first systematically described by Neil Weinstein in 1980. Most people acknowledge that alcohol causes harm — but believe it will happen to someone else. This is not mere selfishness; it is a well-documented cognitive distortion that applies across virtually all health risks. Smokers know cigarettes cause lung cancer but believe their personal risk is below average. Drinkers know alcohol causes liver disease but believe their own consumption is moderate. The bias protects self-esteem but undermines rational risk assessment, and it is particularly resistant to factual correction. [Weinstein (1980)]

The third mechanism is system justification, articulated by John Jost and colleagues in 2004. System justification is the psychological tendency to defend and rationalise the existing social order, even when it harms us. People are motivated to believe that the system is fair, legitimate, and beneficial. If alcohol were truly as dangerous as the evidence suggests, then a society that permits and even encourages its consumption would be morally compromised. It is easier to believe that the system is reasonable — and therefore that alcohol cannot be as bad as the scientists claim — than to confront the possibility of systemic failure. [Jost et al. (2004)]

The fourth mechanism is corporate framing — the deliberate manufacture of doubt by industries whose profits depend on continued consumption. Mark Petticrew and colleagues documented in 2017 how the alcohol industry has systematically adopted the tactics of big tobacco: funding research that produces favourable results, promoting "responsible drinking" messaging that shifts blame from the product to the individual, and lobbying against evidence-based policies such as minimum unit pricing and marketing restrictions. The goal is not to win the scientific argument but to keep it from reaching a conclusion. [Petticrew et al. (2017)]

Together, these four forces create a formidable barrier to change. Cognitive dissonance operates at the individual level, optimism bias at the perceptual level, system justification at the cultural level, and corporate framing at the structural level. Each reinforces the others. The drinker who feels defensive is receptive to industry-funded doubt. The culture that rationalises alcohol consumption provides cover for policy inaction. The system that benefits from alcohol taxes resists reform. Denial, in this context, is not ignorance. It is an active, motivated, and structurally reinforced refusal to see.

Breaking through denial requires more than better data — it requires understanding the psychology that keeps the data from landing. For a full exploration of why alcohol's harms are systematically minimised and how to think more clearly about the issue, see our psychology of alcohol page.

Sources: [Festinger (1957)] | [Weinstein (1980)] | [Jost et al. (2004)] | [Petticrew et al. (2017)]