In a long-term prospective study, patients who reported drinking at least four cups of coffee a day were 18 percent less likely to be admitted with a heart rhythm disturbance than those who drank no coffee at all, according to Dr. Arthur Klatsky, a senior consultant in cardiology at Kaiser Permanente Division of Research in Oakland, Calif.
Tea consumption did not have a similar effect.
The findings, which were presented at the American Heart Association's Conference on Cardiovascular Disease Epidemiology and Prevention this week, were unexpected, Klatsky said, because patient reports of palpitation or forceful heartbeat after drinking coffee are not uncommon.
People who can't tolerate coffee or caffeine should avoid both, Klatsky said in an interview, advice that should not change based on the results of the study.
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