Two alcoholic drinks a day were tied to a 1 in 25 lifetime risk of alcohol-related death

An American modeling study has put a number on what a nightly pair of drinks adds up to over a lifetime. At an average of two alcoholic drinks a day, or 14 a week, the Alcohol Intake and Health Study, known as AIHS, estimated about a 1 in 25 lifetime risk of alcohol-related death. Kevin Shield of the University of Toronto led the work, which was written for the federal agencies that set national dietary advice.

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The paper first appeared in June 2026, and ScienceDaily carried a fresh write-up of it on October 25. The figure is unchanged from the original release, so the useful question now is how the estimate was assembled and where its limits sit.

Building a lifetime risk from 7,200 publications

According to the news release that accompanied the paper, a panel of experts reviewed more than 7,200 scientific articles to set a risk level for each alcohol-related condition. Researchers then applied those risks to large national health datasets and used statistical modeling to estimate long-term outcomes at different drinking levels. The outcomes covered death, disability, cancers of the esophagus, mouth and breast, cardiovascular disease, liver disease and injury. The result is a population-level projection of what a lifetime at a given weekly average does to mortality, not a count of deaths observed in a cohort followed for decades.

The federal government originally commissioned the review to inform the new Dietary Guidelines for Americans, and the Substance Abuse and Mental Health Services Administration funded it. The authors declared no conflicts of interest. The full paper is indexed on PubMed as a 2026 article in the Journal of Studies on Alcohol and Drugs, volume 87, issue 4, pages 621 to 638, with Sinead George and Timothy Naimi among the listed authors. The study also examined how drinking pattern per occasion changes the estimate, an element that matters because two drinks every evening and fourteen drinks on a weekend produce the same weekly average but not the same exposure.

Fourteen drinks a week against seven

The gradient in the findings is steep. At an average of 14 drinks a week, the model puts alcohol-related mortality at roughly 1 in 25. At up to 7 drinks a week, the same work found only minimally elevated risk for most conditions. Risk begins rising above one drink a day for both men and women, and The ASCO Post reported Shield as saying the analysis found no significant protective effect of alcohol on health at any level of consumption.

Low-level drinking may be linked to lower rates of ischemic heart disease and stroke, the authors acknowledge, and the ScienceDaily report repeats that point. Those gains were outweighed by cancer and the other harms, even at 7 drinks a week. That balance is why the paper title speaks of no protective effect at low levels instead of a small benefit.

Timothy Naimi, director of the University of Victoria’s Canadian Institute for Substance Use Research and an adjunct professor at Boston University, put the practical meaning bluntly. In his words, “two drinks per day, which might be considered ‘moderate’ from a social standpoint, is associated with a substantially elevated risk of a premature death caused by alcohol.”

A standard drink and the old two-and-one limits

Counting drinks depends on the pour. The National Institute on Alcohol Abuse and Alcoholism defines one U.S. standard drink as about 14 grams of pure alcohol, which works out to 12 fluid ounces of 5 percent beer, 5 ounces of 12 percent table wine or 1.5 ounces of 40 percent spirits. A 12-ounce beer at 10 percent counts as two. A nightly glass of wine poured generously, or a craft beer at higher strength, can therefore reach the 14-a-week line without looking like much. Hard seltzers and malt beverages near 7 percent follow the same arithmetic, so the label strength matters as much as the glass count.

Earlier federal guidance set daily limits of two drinks for men and one for women. The current Dietary Guidelines tell people to limit alcoholic beverages but name no number. Naimi told reporters the new guidelines carry a useful message that less is better yet give no quantitative framework, which is the gap the AIHS was built to fill. Robert M. Vincent, a former SAMHSA associate administrator, wrote an accompanying editorial stating that the findings were sidelined despite the study’s adherence to its mandate.

Caveats the authors attach to a modeled average

The authors caution that modeled population risks may not reflect any one person’s odds, which depend on lifestyle, genetics and how drinking is spread across a week. They also note that links to conditions such as pancreatic cancer are still emerging and were not fully captured, so the estimate may lean low. Whether federal agencies adopt a numeric ceiling drawn from the 1 in 25 figure remains unanswered in the published record, and the editorial suggests the study may keep circulating without one.

This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.

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