In the natural products space, essential fatty acids (EFAs)–omega-3s, including docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), and omega-6s–are one of the most widely researched categories. Science supports the benefits of omega-3s for brain, heart and joint health. This slide show examines the benefits of omega-3s, as well as the research and marketing behind it.