A single cup of coffee contains about 95 mg of caffeine and acts as a stimulant to the central nervous system. Once in the body, caffeine blocks the effects of adenosine, a chemical that can facilitate AFib. – Drinking up to 3 cups of coffee per day may be safe, protective: study
The authors analyzed multiple population-based studies to determine an association between caffeine intake and its effects on atrial and ventricular arrhythmias. These studies have consistently shown a decrease in AFib with an increase in caffeine ingestion, with one meta-analysis of 228,465 participants showing AFib frequency decreasing by 6 percent in regular coffee drinkers, and a further analysis of 115,993 patients showing a 13 percent risk reduction.
Many clinicians advise patients with atrial or ventricular arrhythmias to avoid caffeinated beverages, but recent research has shown that coffee and tea are safe and can reduce the frequency of arrhythmias, according to a review published today in JACC: Clinical Electrophysiology.
Provided by: American College of Cardiology
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