Omega-3 EPA contains EPA and DHA fatty acids that support cardiovascular health in several ways. It improves blood lipid levels and cell membrane structure and function. The fatty acids also make blood vessel walls more flexible and support the circulatory system. Omega-3 EPA provides antioxidants that prevent genetic damage. Omega-3 fatty acids are the best prevention against heart attacks and ischemia when taken as a supplement. They reduce risk of heart attack and thrombosis by their mild anti-coagulant effects. Omega-3s are essential fatty acids that must be obtained through diet as the body cannot produce them, and they are important for maintaining vital functions.