In 2024 the following article was published in the journal Arrhythmia and Electrophysiology, American Heart Association.
Liu X, Du X, Wang X, et al. Consumption of Sugar-Sweetened or Artificially Sweetened Beverages and Risk of Incident Atrial Fibrillation. Circulation: Arrhythmia and Electrophysiology. 2024;17:e012944. doi:10.1161/CIRCEP.123.012944.
https://www.ahajournals.org/doi/10.1161/CIRCEP.123.012145
Summary
In 2024, researchers analyzed data from more than 200,000 participants enrolled in the UK Biobank to investigate whether consumption of sugar-sweetened beverages, artificially sweetened beverages, and pure fruit juice was associated with the future development of atrial fibrillation (AF).
Over nearly ten years of follow-up, more than 9,300 participants developed atrial fibrillation.
The researchers found that:
- People who consumed more than two liters of sugar-sweetened beverages per week had a modestly higher risk of developing AF compared with non-consumers.
- People who consumed more than two liters of artificially sweetened beverages per week showed an even stronger association with AF risk.
- Moderate consumption of pure fruit juice was associated with a slightly lower risk of AF.
The authors explored several possible explanations for these findings, including metabolic effects, inflammation, changes in the gut microbiome, and autonomic nervous system activity.
Interestingly, the paper discusses emerging evidence suggesting that the vagus nerve may respond to both sugars and artificial sweeteners. Because the vagus nerve plays an important role in communication between the digestive system and the heart, the authors suggest that this pathway deserves further investigation.
The study focused exclusively on atrial fibrillation and did not investigate other cardiac rhythm disturbances such as PVCs, PACs, sinus tachycardia, or bradycardia.
Why Is This Relevant?
Although this study is not specifically about Roemheld Syndrome or Gastrocardiac Syndrome, it contributes to a growing body of research suggesting that what happens in the digestive system may influence heart rhythm through complex biological pathways.
The findings are particularly interesting because they highlight possible interactions between dietary intake, the gut, the autonomic nervous system, and the heart.
While the exact mechanisms remain unclear, studies such as this continue to support the idea that the relationship between the digestive system and cardiovascular function may be more significant than previously appreciated.
Editor’s Note
This is a large, well-designed epidemiological study involving more than 200,000 participants and nearly a decade of follow-up. As a result, its findings deserve attention.
However, readers should be careful not to overinterpret the results.
The study does not prove that artificial sweeteners cause atrial fibrillation. Nor does it demonstrate that sugary drinks directly trigger AF episodes. It simply identifies an association between beverage consumption patterns and the later development of atrial fibrillation.
Importantly, the study did not investigate Roemheld Syndrome, gastrocardiac symptoms, PVCs, PACs, meal-related palpitations, or other rhythm disturbances commonly reported by patients.
The discussion regarding the vagus nerve is intriguing, particularly for those interested in the gut–heart connection. However, the proposed mechanisms remain speculative and were not directly tested in this study.
In short, this paper provides an interesting clue rather than a definitive answer. It supports further research into how diet, the digestive system, and autonomic nervous system activity may influence cardiac rhythm, but it should not be viewed as evidence that sweeteners, sugar, or specific foods cause Roemheld Syndrome or related symptoms.