Turns out, a cup of coffee does make a l-o-t of difference! And on top of that, it’s good for your heart, too! A new large-scale clinical trial has upended long-held beliefs about caffeine and heart rhythm disorders: drinking a single cup of caffeinated coffee per day may significantly reduce the risk of recurrent episodes of irregular heartbeat, specifically Atrial Fibrillation (AFib). The new study, published in the journal JAMA and led by researchers from the University of California, San Francisco (UCSF) and the University of Adelaide, enrolled 200 patients with persistent AFib who underwent cardioversion and were then randomized to either drink coffee or avoid caffeine entirely for six months. And surprisingly, the coffee-drinking group had a far lower recurrence rate of AFib,

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