An Improvement of Cardiovascular Risk Factors by Omega-3 Polyunsaturated Fatty Acids

Hidekatsu Yanai, Yoshinori Masui, Hisayuki Katsuyama, Hiroki Adachi, Akiko Kawaguchi, Mariko Hakoshima, Yoko Waragai, Tadanao Harigae, Akahito Sako

Abstract


An epidemiological survey in the Northwest Greenland reported that the Greenlanders have a lower frequency of acute myocardial infarction and diabetes mellitus. The very low incidence of ischemic heart disease in the Greenlanders was explained by consumption of a diet rich in omega-3 polyunsaturated fatty acids (PUFAs). Possible anti-atherothrombotic effects of omega-3 PUFA include an improvement of lipid metabolism such as a reduction of triglyceride and an increase of high-density lipoprotein-cholesterol (HDL-C), and glucose metabolism, anti-platelet activity, anti-inflammatory effects, an improvement of endothelial function and stabilization of atherosclerotic plaque. The present study reviews an improvement of cardiovascular risk factors such as dyslipidemia and diabetes due to consumption of omega-3 PUFA. A sufficient number of studies suggest that omega-3 PUFA supplementation reduces serum triglyceride and increases HDL-cholesterol. The mechanisms for omega-3 PUFA-mediated improvements of lipid metabolism have been partially elucidated. The studies using experimental animals, part of trials in humans, have shown the beneficial effects of omega-3 PUFA on glucose metabolism and insulin sensitivity. The meta-analysis showed that omega-3 PUFA might prevent development of diabetes in part of population. Further studies should be performed to elucidate the association of omega-3 PUFA supplementation with diabetes, in the future.




J Clin Med Res. 2018;10(4):281-289
doi: https://doi.org/10.14740/jocmr3362w


Keywords


Diabetes; Insulin sensitivity; Omega-3 polyunsaturated fatty acids; Triglyceride

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