Alcohol is deeply embedded in British culture, from celebrations and religious ceremonies to everyday social life. Government guidelines offer a way to reduce the risks associated with drinking, but consuming alcohol within recommended limits does not mean those risks disappear.
Restrictions on drinking, such as those governing driving or operating machinery, generally focus on its immediate effects. Yet alcohol can also have long-term consequences for health, even at levels traditionally described as moderate. For many years, some studies suggested that moderate drinking might actually offer health benefits.
But the evidence has been changing. A 2026 study is particularly interesting because it translates research on alcohol-related illness and death into estimates of the lifetime probability of dying from alcohol consumption.
The researchers combined US surveys of drinking habits with population and mortality data, alongside published research on the risks of diseases and injuries linked to alcohol. Their model considered several causes of death, including cancer, cardiovascular disease, liver disease and injuries.
The results make uncomfortable reading as the risk escalates rapidly. At around seven US standard drinks per week, the estimated lifetime risk of death attributable to alcohol rose above one in 1,000. At more than eight and a half drinks a week, it exceeded one in 100. At 14 drinks a week, the estimated risk was approximately one in 25.
There is an important distinction here: the study used a US standard drink containing 13.6g of pure alcohol, whereas one UK unit contains 8g. The study’s 14 drinks therefore equal almost 24 UK units, considerably more than the UK’s recommended weekly limit of 14 units. Eight and a half US drinks are roughly equivalent to 14.5 UK units.
These are estimates for the US population, rather than predictions of what will happen to an individual drinker. They depend on earlier research and assumptions used in the model, and the exact levels at which risks increase are uncertain. The figures also concern deaths. The study found a wider burden of non-fatal illness and disability including cancers, liver disease, cardiovascular disease and alcohol dependence associated with drinking.
Outdated research
Why, then, has the idea of moderate drinking as healthy been so persistent? One influential explanation was the “French paradox”. Researchers observed relatively low rates of deaths from heart disease in France despite diets containing substantial amounts of saturated fat. In a 1992 paper, scientists suggested that wine consumption might help explain the apparent contradiction.
This helped popularise the so-called J-curve: the idea that moderate drinkers were healthier than both people who never drank and those who drank heavily. Red wine also acquired a reputation for being beneficial because it contains plant compounds called polyphenols, including resveratrol. But the amounts of resveratrol in wine are small, and there isn’t sufficient evidence that drinking wine provides a long-term health benefit that outweighs alcohol’s harms.
Meanwhile, researchers began identifying important weaknesses in the studies that appeared to show benefits from moderate drinking. Some studies grouped former drinkers, including those who had stopped because of poor health, with people who had never drunk alcohol. Moderate drinkers could also differ from non-drinkers in their income, lifestyle and existing health. When researchers accounted for these problems, the apparent reduction in deaths among moderate drinkers disappeared.
At the same time, evidence linking alcohol to cancer strengthened. The International Agency for Research on Cancer identifies alcohol as a cause of cancers of the mouth, throat, voice box, oesophagus, liver, bowel and breast. Alcohol is classified as a group 1 carcinogen, meaning there is sufficient evidence that it causes cancer in humans. This classification indicates how strong the evidence is that something can cause cancer, while the size of the risk depends on exposure.
The World Health Organization states that no safe level of alcohol consumption has been established for cancer risk. Even small amounts can increase the likelihood of some alcohol-related cancers, although the risks generally rise as consumption increases.
UK guidelines
So what does this mean for UK guidelines? NHS advice states people who drink regularly not to exceed 14 units a week, and to spread their drinking over at least three days if they reach that amount.
Crucially, this was never intended as a guarantee of safety. When the guidelines were revised in 2016, the expert group considered evidence suggesting that drinking around 14 UK units a week carried a lifetime risk of death from alcohol of just under one in 100. The new US study reaches a broadly similar risk level at a comparable amount of alcohol, although the models and populations differ.
The latest research therefore reinforces an important distinction between “low risk” and “safe”. Staying within the guidelines can limit harm, but it cannot eliminate it. People may decide that the enjoyment and social connections associated with drinking are worth some risk. Making that choice, however, depends on understanding what the risks actually are.