Latest Research: Even Light Alcohol Drinking Is Harmful to Health
"Drinking a small amount of alcohol is good for health" is a comforting statement drinkers usually use on themselves. But a large study just published in June this year (2026) in the international medical journal Nature Health shows that alcohol consumption is associated with an increased risk of multiple cancers, liver disease, and cardiovascular disease. After comprehensively analyzing 843 studies, the research team pointed out that although low-to-moderate drinking may be associated with a reduced risk of some diseases, as alcohol intake increases, the overall health risk rises significantly.
This study is part of the "Global Burden of Disease Study 2023" (GBD). The research team systematically analyzed 843 cohort studies and case-control studies published through the end of 2023, covering 20 health problems including breast cancer, colorectal cancer, liver cancer, pancreatic cancer, esophageal cancer, cardiovascular disease, diabetes, and chronic liver disease; it is one of the largest assessments to date of the relationship between alcohol and health.
The study found that current drinking behavior (regardless of dose) is associated with an elevated risk of multiple cancers, including breast cancer, colorectal cancer, oral cancer, pharyngeal cancer, esophageal cancer, liver cancer, gastric cancer, pancreatic cancer, and prostate cancer. In addition, the risks of pancreatitis, cirrhosis, chronic liver disease, pulmonary infection, tuberculosis, and atrial fibrillation also rise as alcohol intake increases.
However, the researchers also observed that low-to-moderate alcohol intake is associated with a lower risk of type 2 diabetes, ischemic heart disease, stroke, and dementia. Yet once alcohol intake exceeds a certain level, this potential protective effect gradually disappears, and the risk becomes higher than that of non-drinkers.
The study pointed out that in the past, drinking guidelines varied widely among countries, partly because alcohol's effects on different diseases are not the same, and also because they are influenced by factors such as drinking frequency, amount consumed, and type of beverage. Although moderate drinking may be associated with a reduced risk of certain diseases, overall, high alcohol intake has a negative effect on all health outcomes.
The research team emphasized that, from a public health perspective, people should not focus only on alcohol's effect on a single disease but should comprehensively assess its long-term risk to overall health. With nearly half of the world's population aged 15 and above having a regular drinking habit, this study provides a more comprehensive scientific basis for future drinking guidelines and for personal health decisions.