One of the types of Omega 3s is alpha-linolenic acid (ALA). ALA is produced by leafy green vegetables and can be converted into EPA and DHA by the body. A rich source of ALA is flaxseed, flaxseed oil, canola oil, walnuts, and walnut oil. Flaxseed contains three beneficial elements which include Omega-3 fatty acids, fiber, and phytochemical lignans (plant chemicals that are helpful in the prevention of chronic diseases). Flaxseed is a great option for those who do not like fish, or are looking for alternative food choices to lower their risk for heart disease.