Omega-3 refers to a group of essential fatty acids that are important for human health. These fats are not produced by the body, so they must be obtained through diet. Common sources of Omega-3 include fatty fish like salmon and mackerel, as well as plant-based options like flaxseeds and walnuts. Omega-3 fatty acids are known for their potential health benefits, including supporting heart health, reducing inflammation, and promoting brain function. They are often categorized into three main types: ALA (alpha-linolenic acid), found in plants; EPA (eicosapentaenoic acid); and DHA (docosahexaenoic acid), both found in marine sources.