All omegas are fatty acids, which are vital for our well-being. Taking omega 3, 6, 9 supplements may help support your immune system, brain function, and cardiovascular health. The difference between omegas lies in their chemical components. Omega 3 consists of Alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). Omega 6 has arachidonic and linoleic acids. Finally, omega 9 is a monounsaturated fatty acid that is naturally made in the body from foods like olive oils and nuts. However, taking an omega 9 supplement still offers benefits.