Omega 3 (or n-3) are polyunsaturated fatty acids . The main types are ALA (alpha linolenic acid), DHA (docosahexaenoic acid) and EPA (eicosapentaenoic acid). EPA and DHA are primarily found in seafood with the highest amount in oily fish such as salmon, mackerel, anchovies, and sardines. ALA is more common and found in a lot of plant sources, including seeds, nuts and...