![]() The authors offer several possible mechanisms, including coffee’s antioxidant and anti-inflammatory properties. Could Coffee Actually Help Keep Your Heart Rhythm Regular?Įven more intriguing, this analysis hints that each additional cup of coffee a person drinks per day lowers the risk of arrhythmias by roughly 3 percent. In addition, people who are genetically predisposed to metabolize caffeine slowly were no more susceptible to irregular heart rhythms. Those who usually drank coffee were no more likely to develop rhythm disturbances than those who avoided coffee. This review included nearly 400,000 people. ![]() To answer it, they analyzed data from the UK Biobank over a decade. “Is moderate, habitual coffee intake associated with the risk of arrhythmia, and is that association modified by genetic variants that affect caffeine metabolism?” In a previous study, researchers had posed this question: On coffee-drinking days, people took more steps and spent less time asleep. Investigators noted a common but not worrisome heart irregularity called premature ventricular contraction, or PVC, more often on coffee-consuming days. Fortunately, it was no more frequent when people were drinking coffee than on caffeine-free days. Atrial fibrillation is a serious arrhythmia. The results revealed one type of arrhythmia was more common on coffee days:Ĭoffee had no effect on the upper chamber of the heart. Through this technology, the investigators could ascertain that the volunteers followed their assignments closely. When they drank a cup of coffee, they pushed a button on a recording device. Each wore a Fitbit to track activity and sleep as well as a continuous electrocardiogram monitor and blood sugar tracking device. No volunteer went more than two days without their customary coffee. The protocol randomly assigned participants to drink coffee or avoid it and monitored them to see if they kept their heart rhythm regular. ![]() The CRAVE study recruited 100 middle-aged volunteers with no history of heart disease or rhythm problems. Researchers presented intriguing findings at the 2021 American Heart Association Scientific Sessions. “Mild-moderate coffee intake of all types should not be discouraged but rather considered part of a healthy lifestyle.” Coffee Drinking Linked to PVCs: Even the people who drank ground or instant coffee had a lower risk of heart attacks or strokes and premature death. Notably, those individuals drinking 2 to 3 cups of decaffeinated coffee daily had the lowest risk of cardiovascular disease. We are pleased that the scientists asked about decaf coffee consumption, as our readers are interested in the effects of decaf compared to regular coffee. Those drinking decaf, on the other hand, did not experience this benefit. To many cardiologists’ surprise, people who drank ground or instant coffee up to 5 cups a day had a lower risk of irregular heart rhythms including atrial fibrillation. Investigators collected data on the participants for more than 12 and a half years. The roughly 450,000 volunteers answered questions about their coffee drinking behaviors from time to time. Investigators analyzed data from the UK Biobank. Does Coffee Trigger Arrhythmias? Ground or Instant Coffee Drinkers Keep Their Heart Rhythm Regular:Ī new study reinforces the health benefits of coffee drinking ( European Journal of Preventive Cardiology, Sept. Regular coffee drinkers appear less likely to develop arrhythmias. ![]() A few recent studies contradict that conventional wisdom, however ( AHA Scientific Sessions 2021, NovemJAMA Internal Medicine, online July 19, 2021). Doctors often tell patients to avoid caffeinated coffee to keep their heart rhythm regular. Coffee has a bad reputation when it comes to irregular heart rhythms.
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