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Nutrition Glossary: Omega-3 Fatty Acids

By , About.com Guide

Updated April 22, 2013

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Definition: Polyunsaturated fatty acids found in fish, flax, canola oil, pumpkin seeds, soy and walnuts. Eating a diet rich in omega-3 fatty acids raises HDL cholesterol (the good kind of cholesterol) levels and may help to prevent cardiovascular disease.

There are three main dietary omega-3 fatty acids -- eicosapentaenoic acid and docosahexaenoic acid (both found in animal products like fish and seafood), and alpha linolenic acid found in plants.

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