Home / Health / Coffee Drinkers Rejoice: New Study Finds Reduced Heart Arrhythmia Risk
Coffee Drinkers Rejoice: New Study Finds Reduced Heart Arrhythmia Risk
10 Nov, 2025
Summary
- Coffee drinkers 47% less likely to have atrial fibrillation episodes
- Melatonin supplements associated with higher heart failure risk
- Caffeine blocks receptors that facilitate atrial fibrillation
According to a study published on November 9, 2025, drinking one cup of coffee per day is associated with a 47% reduced risk of atrial fibrillation (AF) episodes in patients with the condition. The DECAF (Does Eliminating Coffee Avoid Fibrillation?) study, which involved 200 participants over six months, found that coffee drinkers were significantly less likely to experience irregular heartbeats compared to non-coffee drinkers.
The findings contrast with the traditional assumption that coffee promotes unhealthy heart rhythms. Researchers explain that caffeine in coffee can block specific receptors that facilitate AF, while the beverage's antioxidants may also help reduce inflammation, lower blood pressure, and manage blood sugar levels.
However, the study also uncovered a concerning link between melatonin supplements and heart health. Preliminary research suggests that consistently taking melatonin is associated with a higher risk of heart failure. Experts caution that while moderate coffee intake appears beneficial for those with AF, excessive consumption or drastic dietary changes should be discussed with a medical provider.
