Chapter 77

Caffeine and Atrial Fibrillation

Anna Vittoria Mattioli     Department of Life Science, University of Modena and Reggio Emilia, Modena, Italy


Caffeine is the most popular consumed active substance in the world, and almost all caffeine comes from coffee. However, recent reports have suggested an increase in caffeine intake from energy drinks, mainly in adolescent and young adults. The effects of caffeine on atrial fibrillation are controversial, because human studies lead to different results. It depends on the source and on the dose of caffeine. Moderate intake of caffeine seems to have protective effects on arrhythmias; to the contrary, high intake of caffeine seems to be associated with increased risk of atrial fibrillation. ...

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