A Story About Wine We Were All Told

For decades, we’ve been told a reassuring story. A glass of red wine a day is good for your heart. Most people would still say this is accurate.

I remember when I first opened my practice in the United States after returning from China. Around that time, I came across an entire book devoted to the health benefits of wine. Yes, a whole book.

Armed with this information, I felt better prepared to answer a question many patients asked me: how much alcohol, or how many cups of wine, is reasonable to drink in a week?

The idea sounded comforting. Wine comes from grapes, contains antioxidants, and has been woven into cultural and religious life for thousands of years. Many physicians, and many alternative health practitioners like myself, repeated this message sincerely. People were happy to believe it.

But as nutrition science matured, and as researchers began to look more carefully at how this belief became so widespread, the story began to change.

The “Healthy Drinker” Illusion

Much of the original evidence suggesting that moderate wine drinkers live longer came from observational studies. These studies follow people’s habits and outcomes over time, but they cannot establish cause and effect.

A major flaw later identified in many of these studies is what researchers now call the sick-quitter bias.

In older research, people who used to drink but stopped because of health problems were often grouped together with lifelong abstainers. As a result, the non-drinker group appeared less healthy, not because abstaining caused illness, but because illness had caused people to stop drinking.

This is known as reverse causation. Once researchers accounted for it, much of wine’s supposed heart-protective effect weakened significantly or disappeared altogether.

When Better Science Entered the Picture

To bypass these limitations, scientists turned to a method called Mendelian randomization.

Instead of asking people how much they drink, researchers studied individuals born with genetic variants that make alcohol unpleasant to consume. These people experience flushing, nausea, and discomfort due to acetaldehyde buildup, and as a result, they tend to drink very little or not at all.

The findings were striking. People who drank less because of their genetics had lower rates of heart disease, even compared to light or moderate drinkers. Because genes are assigned at birth and are not influenced by lifestyle or health later in life, this method avoids many of the biases that plague observational studies.

The implication is simple and uncomfortable. Less alcohol appears to be better for cardiovascular health, even at low levels of consumption.

This is one of those moments when careful science quietly overturns a popular belief.

Why the Message Spread So Widely

At this point, a reasonable question arises. If the evidence was always shaky, why did the message that moderate drinking is good for you become so dominant?

The answer is familiar to anyone who follows medical research. Industry funding.

There is now substantial documentation showing that the alcohol and wine industries played a major role in shaping research priorities, study design, and public messaging around moderate drinking.

A Turning Point

In 2018, the National Institutes of Health abruptly shut down a one-hundred-million-dollar clinical trial called the Moderate Alcohol and Cardiovascular Health study.

An internal investigation revealed that roughly two-thirds of the funding came from some of the world’s largest alcohol producers. More troubling was the finding that researchers and government officials had actively courted industry funding and reassured sponsors that the study was likely to show cardiovascular benefits, while downplaying known risks such as cancer.

The trial was terminated.

A Pattern, Not an Exception

This episode did not stand alone.

A 2021 analysis of systematic reviews examining alcohol and heart disease found a clear pattern. Reviews authored by researchers with financial ties to the alcohol industry consistently concluded that moderate drinking was cardioprotective. Reviews without industry ties produced mixed results, with many finding no benefit at all.

When funding sources and conclusions align this neatly, it raises difficult but necessary questions.

Marketing Health Through Science

The wine industry, in particular, invested heavily in promoting a cardio-protective narrative. Industry-funded organizations helped frame wine as part of a healthy lifestyle, often linking it to the Mediterranean diet.

A central pillar of this messaging was the so-called J-curve theory, the idea that people who drink a little are healthier than those who drink none at all. This curve collapses once the sick-quitter bias is removed.

Where the Science Is Now

Because of these revelations, global health authorities have begun to distance themselves from the one-glass-a-day narrative.

In 2023, the World Health Organization stated clearly that no level of alcohol consumption is safe for health.

Red wine does contain antioxidants such as resveratrol, but the amounts used in laboratory studies would require drinking hundreds of glasses a day. Any theoretical benefit is overwhelmed by alcohol’s well-documented risks, including cancer, liver disease, and dependency.

What Actually Protects the Heart

What replaces the wine myth is not depriving yourself of wine, but simply clarity.

The most consistent evidence supports familiar, unglamorous strategies for supporting heart health and your health in general: eating whole, minimally processed foods, moving the body regularly but moderately, managing stress, sleeping well, and maintaining a healthy weight. These approaches reduce cardiovascular risk without creating new problems in the process.

A Clear-Eyed Conclusion

Wine has cultural, social, and religious meaning and many people enjoy a good glass now and then.

But from a health perspective, it’s important to be honest with yourself.

Wine is not medicine. It is not required for heart health. And the belief that it was protective was, to a significant degree, subsidized by industry influence rather than solid science.

So enjoy a glass occasionally if you choose. In moderation, the body can handle it. But drink with wisdom, knowing that the story we were told about healthy wine has quietly outlived the evidence.