alexa Association between omega-3 fatty acid supplementation and risk of major cardiovascular disease events: a systematic review and meta-analysis.
Agri and Aquaculture

Agri and Aquaculture

Journal of Aquaculture Research & Development

Author(s): Rizos EC, Ntzani EE, Bika E, Kostapanos MS, Elisaf MS

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Abstract CONTEXT: Considerable controversy exists regarding the association of omega-3 polyunsaturated fatty acids (PUFAs) and major cardiovascular end points. OBJECTIVE: To assess the role of omega-3 supplementation on major cardiovascular outcomes. DATA SOURCES: MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials through August 2012. STUDY SELECTION: Randomized clinical trials evaluating the effect of omega-3 on all-cause mortality, cardiac death, sudden death, myocardial infarction, and stroke. DATA EXTRACTION: Descriptive and quantitative information was extracted; absolute and relative risk (RR) estimates were synthesized under a random-effects model. Heterogeneity was assessed using the Q statistic and I2. Subgroup analyses were performed for the presence of blinding, the prevention settings, and patients with implantable cardioverter-defibrillators, and meta-regression analyses were performed for the omega-3 dose. A statistical significance threshold of .0063 was assumed after adjustment for multiple comparisons. DATA SYNTHESIS: Of the 3635 citations retrieved, 20 studies of 68,680 patients were included, reporting 7044 deaths, 3993 cardiac deaths, 1150 sudden deaths, 1837 myocardial infarctions, and 1490 strokes. No statistically significant association was observed with all-cause mortality (RR, 0.96; 95\% CI, 0.91 to 1.02; risk reduction [RD] -0.004, 95\% CI, -0.01 to 0.02), cardiac death (RR, 0.91; 95\% CI, 0.85 to 0.98; RD, -0.01; 95\% CI, -0.02 to 0.00), sudden death (RR, 0.87; 95\% CI, 0.75 to 1.01; RD, -0.003; 95\% CI, -0.012 to 0.006), myocardial infarction (RR, 0.89; 95\% CI, 0.76 to 1.04; RD, -0.002; 95\% CI, -0.007 to 0.002), and stroke (RR, 1.05; 95\% CI, 0.93 to 1.18; RD, 0.001; 95\% CI, -0.002 to 0.004) when all supplement studies were considered. CONCLUSION: Overall, omega-3 PUFA supplementation was not associated with a lower risk of all-cause mortality, cardiac death, sudden death, myocardial infarction, or stroke based on relative and absolute measures of association. This article was published in JAMA and referenced in Journal of Aquaculture Research & Development

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