Almost all the news about Omega-3 fatty acids is good. But there are different Omega-3s out there. The Omega-3 from plants like flax is called ALA or alpha linolenic acid, while EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid ) are found in marine organisms like fish oil. These essential fatty acids are needed by humans, but cannot be synthesized by us. Humans can make ALA into EPA, and then into DHA, but this process becomes less efficient with age.