Is fish oil helpful or harmful to the heart?
Unlike most other supplements, fish oil has been rigorously studied, said Dr. JoAnn Manson, a professor of medicine at Harvard Medical School. But the results of these studies are conflicting, leaving researchers and doctors still debating whether fish oil is beneficial for heart health. They also revealed that taking fish oil is linked to a slightly increased risk of developing atrial fibrillation, a type of irregular heartbeat.That's where the evidence for both the benefits and risks of fish oil lies today.Lots of studies, but unclear benefitsAfter reading cables from Greenland, researchers began looking at people in other parts of the world and found, in study after study, that those who consumed fish at least once a week were less likely to die of coronary heart disease than thos...