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They're abundant in foods like walnuts, seafood, fatty fish, and certain seed and plant oils. They're subdivided into three types: alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA).
By Anne Danahy, MS, RDN
Purple potatoes are the eye-catching gems of the potato aisle.
Like other members of the potato family (Solanum tuberosum), they come from a tuber plant native to the Andes mountain region in South America.