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Patients with irregular heartbeats — caused by atrial fibrillation (AF) , the most common heart rhythm disorder — have historically been warned to limit or eliminate caffeine.

But a new study suggests that moderate coffee consumption could actually reduce recurrence of AF after treatment.

Researchers at University of California, San Francisco enrolled 200 adults with persistent AF who were scheduled for cardioversion, a procedure that restores normal heart rhythm.

THAT MORNING CUP OF COFFEE COULD BE THE KEY TO A HAPPIER DAY, NEW STUDY SUGGESTS

Participants were randomly assigned to one of two groups. One group continued to drink caffeinated coffee daily (at least one cup), while the other was instructed to abstain comp

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