Researchers put alcohol mortality risk at 1 in 25 for 14 weekly drinks

Researchers from the United States and Canada estimated alcohol-attributable mortality at 1 in 25 for consumption of 14 drinks a week, according to a peer-reviewed article summarized by ScienceDaily on Nov. 2.

The Journal of Studies on Alcohol and Drugs analysis evaluated more than 7,200 scientific articles and challenges the idea that low or moderate alcohol use is harmless. The researchers said they did not detect an overall health benefit from drinking at any level, including seven drinks a week.

"This study provides the most comprehensive U.S. estimates to date of lifetime risks of alcohol-attributable mortality and morbidity, showing that even moderate levels of consumption increase the risk of premature death and disability," said Katherine M. Keyes, a co-author and professor of epidemiology at Columbia University Mailman School of Public Health.

Kevin Shield, the lead author and an associate professor at the University of Toronto, said: "Even low levels of alcohol use come with health risks." He added: "And that risk continues to increase the more someone drinks."

The team reviewed evidence on diseases and injuries linked to alcohol, then combined those findings with large United States health data sets. The statistical models estimated lifetime risks across conditions including cardiovascular disease, liver disease, injuries, and cancers of the esophagus, mouth and breast.

A standard drink generally means 12 ounces of beer, 5 ounces of wine or 1.5 ounces of spirits, though alcohol concentration can change those amounts. The researchers said risks increased above one drink per day for both men and women.

The analysis differs from older messages that suggested moderate drinking might help the heart. The researchers acknowledged that low intake may be associated with lower risk of ischemic heart disease and stroke; ischemic heart disease means reduced blood flow to the heart muscle. But when cancer, liver disease, injuries and other outcomes were included, the article said potential cardiovascular gains were outweighed.

The study cannot show an individual person’s exact risk from drinking. The estimates describe population-level risk and may vary with genetics, lifestyle, drinking pattern and other health factors. The source material did not provide confidence intervals in the summary.

The article was funded by Synergy Enterprises and the United States Substance Abuse and Mental Health Services Administration. In an accompanying editorial, Robert Vincent, a former associate administrator at the agency, said the Alcohol Intake and Health report had been invited to inform the Dietary Guidelines for Americans, 2025-2030, and wrote that "its findings were sidelined."

The researchers said additional work is needed on possible links between alcohol and other conditions, including pancreatic cancer. For readers, the study supports a lower-risk framing rather than a safe threshold: less alcohol was associated with lower lifetime harm in the population estimates.

Source: peer-reviewed journal article, Journal of Studies on Alcohol and Drugs, summarized by ScienceDaily and Columbia University Mailman School of Public Health, Nov. 2, 2026.

Atlas360 reports health research and does not provide medical advice.