If you're confused about how much alcohol is safe to drink, you're not alone. Luckily, the message — and the research behind it — has become much clearer in recent years. Where doctors and alcohol researchers once suggested a glass or two of red wine a day might be good for the heart or even the brain, experts increasingly agree that no amount of alcohol is good for your health overall.
A comprehensive review of the evidence, published last month in the Journal of Studies on Alcohol and Drugs, reinforces this conclusion. It found that alcohol-related health risks begin at about one drink per day, climb with each additional drink and start rising at lower levels of drinking than many people might expect.
What does that mean for anyone who enjoys a glass of wine with dinner or a couple of beers on the weekend? We asked one of the study's authors, Christopher Kahler, director of the Center for Alcohol and Addiction Studies and professor of behavioral and social sciences in the School of Public Health, to explain.
The study points to one drink a day for everyone. Why is that?
Kahler: We looked at how different levels of alcohol use are related to early death and disability by considering how risk changes with different levels of alcohol use for diseases and injuries that we know can be caused by alcohol. By looking across all of these possible outcomes, we determined that there is no overall protective effect of alcohol to health at any level of drinking and estimated that by about seven drinks a week, which gets at that one drink a day, there is a meaningful risk of alcohol-related death and disability for both men and women, especially due to risks for cancer and liver disease.