Omega-3 fatty acids and cardiac arrhythmias

Abstract

Purpose of review: There are suggestions of effects of marine omega-3 polyunsaturated fatty acids (PUFAs) in relation to ventricular arrhythmia and sudden cardiac death and, more recently, also of possible effects related to atrial fibrillation.

Recent findings: On the basis of the recently published human studies, this article not only focusses primarily on recent developments and current knowledge on the effect of marine omega-3 PUFAs on atrial fibrillation, but also provides a status for their effects on ventricular arrhythmias.

Summary: Marine omega-3 PUFAs may protect against ventricular arrhythmias, and there is growing evidence for an effect of marine omega-3 PUFAs in the prevention and treatment of atrial fibrillation. Further studies are needed to establish which patients are more likely to benefit from omega-3 PUFAs, the timing of treatment, and the dosages.