Omega-3 fatty acids are essential nutrients that are important for your body and brain. Omega-3 fatty acids must be obtained from the diet. Omega-3 fatty acids are a family of dietary fatty acids, the three main types are alpha linolenic acid (ALA) (Wikipedia), Eicosapentaenoic acid (EPA) (Wikipedia), and Docosahexaenoic acid (DHA) (Wikipedia). ALA is mainly used in the body for energy, but it can also be converted into the biologically active forms of Omega-3, EPA and DHA. EPA has several functions in your body, and part of it can be converted into DHA. DHA is the most important omega-3 fatty acid in your body. It’s a key structural component of your brain, the retina of your eyes, and numerous other body parts. While EPA and DHA are primarily found in animal foods, ALA occurs in many plant foods.