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Harvard Health Letter

By the way, doctor: Can you give me some advice about omega-3s?

Published: July, 2010

Q. I am confused about omega-3 fats. Are the different types equally good for you?

A. There are three main types to keep track of: eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and alpha-linolenic acid (ALA). EPA and DHA are found mainly in fish, so they're sometimes called marine omega-3s. ALA is found in plant-based foods, such as flaxseed, walnuts, and canola and soybean oils.

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