It has long been known by scientists that consuming fish lowers the risk of cardiac disease. According to an article printed in the journal of the American Heart Association, Circulation researchers now have laboratory evidence to explain how consuming fish oil can prevent heart arrhythmias. Experiments have shown that the omega-3 essential fatty acids from consuming fish are stored in the cell membranes of heart cells.
The presence of the omega-3 fatty acids in the membranes of heart cells has a positive effect on heart rhythms. They block excess sodium and calcium currents in the heart. Excessive electrical discharges (with which the minerals are involved) can cause erratic changes in heart rhythm. Sudden cardiac death may be the result of such arrhythmias.
The first study to demonstrate the benefit of fish oil was in 1989 where more than 2,000 men were told to increase fiber, given advice about fat or told to eat fish. The participants who ate fish twice each week had an almost 30% reduction in death compared to the groups decreasing fat and increasing fiber.
Patients with coronary artery disease can benefit from a dose of one gram a day of omega-3 fatty acids. This is greater than what can readily be achieved through diet alone. Supplementation may be necessary. Consult a physician for this. Omega-3 fatty acids have an anti-coagulant effect and may increase the anti-coagulant effects of any prescription drugs. The American Heart Association recommends that individuals with certain cardiovascular conditions consult with their physician about fish oil supplements.