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J Cardiovasc Med (Hagerstown). 2007 Sep;8 Suppl 1:S46-9.

Cardiovascular risk and the omega-3 index.

Author information

1
Preventive Cardiology, Medizinische Klinik und Poliklinik Innenstadt, Ludwig Maximilians-Universit√§t M√ľnchen, Munich, Germany. Clemens.vonschacky@med.uni-muenchen.de

Abstract

A reliable risk factor for sudden cardiac death (SCD) for the general population remains to be defined. We propose the omega-3 index, defined as the combined percentage of eicosapentaenoic (EPA) and docosahexaenoic acids (DHA) in red blood cell membranes. It reflects the EPA + DHA status of a given individual. It can be determined by a standardised and reproducible laboratory procedure. Several lines of evidence support the omega-3 index as a risk factor for SCD: in epidemiological studies, a steep dependence of risk for SCD and the omega-3 index has been observed between 6.5% (risk 0.1) and 3.3% (risk 1.0). EPA + DHA are antiarrhythmic on the supraventricular and ventricular levels. Dietary EPA + DHA reduce the incidence of SCD. Cardiac societies recommend EPA + DHA for prevention of SCD. The omega-3 index can assess risk for SCD and monitor therapy with EPA + DHA. Moreover, it compares very favourably with other risk factors for SCD.

[Indexed for MEDLINE]

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