Omega-3s may support heart health by the maintenance of the suppleness and elasticity of blood vessels, helping support blood flow and also by assisting the maintenance of triglycerides (fats) within the normal range in the blood of healthy people. Populations consuming at least 1-2 meals of fish per week have reduced deaths due to cardiovascular disease.EPA and DHA are important for the structure and function of cell membranes. Omega-3 fatty acids are particularly rich in the brain, nervous system and retina where they play an important role in development and function. They support a healthy mood and higher intakes of omega-3s are associated with less age-related mental decline.Omega-3 fatty acids have also demonstrated anti-inflammatory effects which may be due to decreased production of certain inflammatory compounds. At higher doses, omega-3 fatty acids are thought to help relieve the symptoms of rheumatoid arthritis (including helping reduce morning stiffness, pain and swelling.