No, moderate drinking isn’t good for your health
March 31, 2023 Updated Fri., March 31, 2023 at 6:03 p.m.
Drinking moderate amounts of alcohol every day does not – as once thought – protect against death from heart disease, nor does it contribute to a longer life, according to a sweeping new analysis of alcohol research.
The review, which examined existing research on the health and drinking habits of nearly 5 million people, is one of the largest studies to debunk the widely held belief that moderate drinking of wine or other alcoholic beverages is good for you. Last year, researchers in Britain examined genetic and medical data of nearly 400,000 people and concluded that even low alcohol intake was associated with increased risk of disease.
The new study, which appears Friday in Jama Network Open, also found that drinking relatively low levels of alcohol – 25 grams a day for women (less than 1 ounce) and 45 grams (about 1.5 ounces) or more per day for men – actually increased the risk of death. A standard wine pour is about 5 ounces. The standard serving size for beer is 12 ounces, and for distilled spirits, 1.5 ounces.
“This study punctures the hope of many that moderate alcohol use is healthy,” said Robert DuPont, a psychiatrist and substance abuse expert who served as the first director of the National Institute on Drug Abuse.
“The bottom-line message is that in terms of health, less alcohol is better,” said Tim Naimi, who is an author of the study and is the director of the Canadian Institute for Substance Use Research and a professor of public health and social policy at the University of Victoria. “Or you could say: Drink less, live more.”
The belief that daily alcohol consumption is good for you dates to the 1980s, when researchers identified the “French paradox” – the suggestion that low rates of cardiovascular disease among men in France was associated with daily wine consumption. Although later analyses found flaws in the research, the belief that moderate drinking improved health became widely accepted. Much of the research into the health effects of alcohol has been funded by the alcohol industry. One recent report found that 13,500 studies have been directly or indirectly paid for by the industry.
“It’s often been thought that wine is something special, that alcohol in wine somehow has magic properties,” said lead author Tim Stockwell, a professor of psychology at the University of Victoria. “It was just a publicity coup for the wine industry three decades ago. The role of alcohol in wine as protective is now disputed, and the evidence doesn’t hold up.”
Finding bias in alcohol studies
The new review, called a “meta-analysis,” looked at 107 observational studies that involved more than 4.8 million people. The study stressed that previous estimates of the benefits of moderate alcohol consumption on the risk of death by “all causes” – meaning anything, including heart disease, cancer, infections and automobile accidents – were “significantly” biased by flaws in study design.
Earlier research did not adjust for numerous factors that could influence the outcome, for example, age, sex, economic status and lifestyle behaviors such as exercise, smoking and diet, they said. Using statistical software, the researchers essentially removed the bias, adjusting for various factors that could skew the research. After doing so, they found no significant declines in the risk of death by any causes among the moderate drinkers.
Unwelcome news for those who enjoy alcohol
Stockwell acknowledged that the study’s findings would not come as welcome news to those who enjoy a few worry-free daily drinks.
“This is controversial because people like to drink,” Stockwell said. “It’s our favorite recreational drug. We use it for pleasure and relaxation, and the last thing we want to hear is that it causes any harm. … It’s comforting to think that drinking is good for our health, but unfortunately it’s based on poor science.”
The latest study is another piece in the growing consensus questioning the still-widespread belief that moderate drinking contributes to good health, the authors said. The World Heart Federation, for example, declared in a January 2022 policy brief that “contrary to popular opinion, alcohol is not good for the heart,” adding that any level of alcohol consumption can lead to loss of healthy life.
The most recent Dietary Guidelines for Americans 2020-2025 recommend that adults limit alcohol intake to two drinks or fewer a day for men and one drink or less for women, adding “that drinking less is better for health than drinking more,” and urging pregnant women to abstain.
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