Can drinking champagne reduce your risk of sudden cardiac arrest? Here’s why it’s only small part of story

David C Gaze for The Conversation

Harare: “My only regret in life is that I didn’t drink enough champagne,” the English economist and philosopher John Maynard Keynes (1883–1946) is reported to have said. As it turns out, there may be a surprising ounce of truth to that quote.

Picture this: a glass of champagne – bubbly, crisp and, for many, reserved for toasts and celebrations. Now imagine it being mentioned in the same sentence as a way to help prevent sudden cardiac arrest: a condition where the heart abruptly stops beating, killing tens of thousands each year, often without warning.

Sounds too good to be true, right? Yet, a Canadian study has uncovered a curious link. Using data from over half a million people in the health research database the UK Biobank, researchers found that those who consumed moderate amounts of white wine or champagne had a lower risk of experiencing sudden cardiac arrest.

Surprising, especially given the widely held belief that red wine, not white, is what benefits the heart.

To rule out coincidence, the researchers double-checked their findings using genetic data – and the connection seemed to hold firm. This suggests there might be more to the story than chance alone.

The study didn’t stop at wine. It explored more than 100 lifestyle and environmental factors tied to sudden cardiac arrest, including diet, exercise, air pollution, emotional wellbeing, body composition and education levels – all of which have been independently associated with risk.

The conclusion? Up to 63 per cent of sudden cardiac arrest cases could potentially be prevented by addressing these risk factors.

Among all the protective factors identified, a few stood out: fruit consumption, regular computer use (yes, really) and moderate drinking of white wine or champagne were all linked to a reduced risk of sudden cardiac arrest. Why? That remains uncertain.

One theory is that white wine contains antioxidants that may support heart health. Another possibility is that people who drink these types of beverages may also be more affluent and more likely to engage in other healthy behaviour, such as eating well, exercising regularly – and have access to better healthcare.

But before you pop a cork in celebration, a word of caution: alcohol remains a complex and often contradictory player in heart health. Other large-scale studies suggest a U-shaped relationship between alcohol and cardiovascular disease.

Non-drinkers may have a certain level of risk, moderate drinkers of one glass of wine a day may see some benefit, but heavy drinking sharply increases the risk of high blood pressure, stroke and heart failure.

One observational study involving over 400,000 participants even found that moderate drinking could raise the risk of arrhythmias, which in some cases can lead to sudden death.

So while champagne may offer a hopeful glimmer, it’s no magic bullet. The study’s broader message was clear: it’s the overall lifestyle that matters most. Better sleep, regular physical activity and a balanced diet significantly reduced the risk of sudden cardiac arrest – and could prevent nearly one in five cases.

On the flip side, obesity, high blood pressure and chronic stress were among the strongest risk factors, along with lower education levels and exposure to air pollution.

These findings underscore that preventing sudden cardiac arrest isn’t just about personal habits: it’s also about the environments we live in and the policies that shape them. Cleaner air, better education and easier access to nutritious food could all play a role.

Sudden cardiac arrest is not entirely random. Many of the contributing factors are within our control. Managing stress, staying active, maintaining a healthy weight, getting quality sleep – and yes, perhaps enjoying the occasional glass of white wine – can all help.

But the real power lies in stacking small, healthy choices over time. Prevention is rarely about a single change; it’s about the cumulative effect of many.

And in case you were wondering: Keynes suffered a series of heart attacks in 1946, beginning during negotiations for the Anglo-American loan in Savannah, Georgia. He described the process as “absolute hell”. A few weeks after returning to his farmhouse in Firle, East Sussex, he died of a heart attack at the age of 62.

Maybe he was right about drinking more champagne after all.

(David C Gaze is a Senior Lecturer in Chemical Pathology, University of Westminster)