Omega-3 fatty acids are a type of fat the body cannot make on its own. They are an essential fat, which means they are needed to survive. We get the omega-3 fatty acids we need from the foods we eat. Fish are the best food source of omega-3 fatty acids. Some plants also contain omega-3 fatty acids. There are two kinds of omega-3 fatty acids in fish — eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). The form of omega-3 in plants is called alpha-linolenic (ALA).
