Eating fish is supposed to be good for your heart, but a new study suggests that a diet full of fish will not prevent the irregular heart rhythm called atrial fibrillation. The researchers analyzed data from nearly 45,000 postmenopausal women in the Women’s Health Initiative Study. They found no relationship between fish consumption and the likelihood of developing atrial fibrillation. Omega 3 fatty acids in the diet were also unrelated to the heart rhythm disturbance. A diet containing fish still appears to be beneficial for heart health in general, and fish oil supplements can help lower the blood fats triglycerides and cholesterol. Fish oil has also been shown to improve survival after a heart attack.
[American Journal of Cardiology, online Feb. 8, 2010]