For years, the idea that a daily glass of wine could help you live longer has been widely accepted, leading many people to view moderate alcohol consumption as part of a healthy lifestyle. But what if that belief is based on flawed science? According to experts, alcohol remains toxic to the body even in small amounts, and the studies that linked moderate drinking to longevity may not tell the full story.
Dr Jeremy London, a board-certified cardiothoracic surgeon with more than 25 years of experience, is debunking the widely held belief that moderate alcohol consumption can help you live longer. In an Instagram video shared on June 4, the heart surgeon breaks down why the research behind these claims is often misunderstood, pointing to flaws in the observational studies that helped popularise the idea.
The alcohol-longevity myth
According to Dr London, the long-standing belief that moderate alcohol consumption can extend lifespan is rooted in flawed research. He argues that the idea has persisted for years because it was based on an incomplete interpretation of the data.
Many of the early studies compared people who drank alcohol with those who did not. However, a significant portion of the non-drinking group consisted of former drinkers who had stopped consuming alcohol due to existing health problems. As a result, moderate drinkers seemed healthier by comparison, creating the misleading impression that alcohol itself was responsible for better health outcomes.
The heart surgeon notes, “Does drinking in moderation add years to your life? Well, that used to be the story. A glass of wine a day and you would live longer. And I’m not here to tell you that a single drink is going to hurt you. I’m going to tell you that the story is incomplete. The longevity claim came from studies comparing drinkers to non-drinkers. But the non-drinkers were full of people who’d already quit – often because they were sick. That made moderate drinkers look healthier by comparison. Fix the flaw, and the benefit shrinks toward nothing.”
Alcohol remains inherently harmful
Dr London emphasises that regardless of what those early studies suggested, they do not change a fundamental fact: alcohol is inherently toxic to the body. When you consume alcohol, your body breaks it down into a compound called acetaldehyde, a toxic byproduct that can damage cells and DNA.
Acetaldehyde is classified as a carcinogen and belongs to the same broad category of cancer-causing substances as those found in tobacco. This means that even if moderate drinkers appeared healthier in some studies, alcohol itself still exposes the body to compounds known to damage your health.
He explains, “Here’s what doesn’t shrink. Every time you drink, your body turns ethanol into acetaldehyde – a reactive compound that damages DNA. The same agency that classifies tobacco as a carcinogen puts acetaldehyde in the same group.”
Is there a safe limit to alcohol?
Dr London further points out that there are no scientifically proven health benefits to drinking alcohol. In fact, current evidence suggests that when it comes to alcohol consumption, less is always better. Drinking smaller amounts is preferable to drinking more, and abstaining altogether is better than drinking even a little.
For this reason, the heart surgeon urges people to make informed decisions about alcohol use. If you choose to drink, he says, it should not be because you believe it is improving your health or protecting your heart. Rather than viewing alcohol as a wellness tool, Dr London encourages people to understand its risks and make choices based on the best available evidence.
He highlights, “So, have any of these agencies found a benefit to drinking alcohol? The short answer is no. What they have identified is that a little is better than a lot and none is better than a little. So, what I ask is, make informed decisions. If you’re going to drink, don’t drink because you think it’s going to add years to your life.”
Note to readers: This article is for informational purposes only and not a substitute for professional medical advice. It is based on user-generated content from social media. HT.com has not independently verified the claims and does not endorse them.
