Essential fatty acid (EFA), also known as polyunsaturated fat, is not made by the body, so it is essential to get EFA from food. EFA supports and regulates important body functions in the cardiovascular, reproductive, immune, and nervous systems.
The two types of EFA are:
Another type of omega-3 fatty acid is found in fatty fish and shellfish as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Salmon, anchovies, herring, sardines, Pacific oysters, trout, Atlantic mackerel, and Pacific mackerel are high in EPA and DHA and lower in mercury.
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