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An_192754 posted:
Omega-3 fatty acids, found mainly in fatty fish such as salmon, rainbow trout, mackerel and sardines, offers health benefits that can not be obtained from other foods. Omega-3 fatty acids from fish are lowering triglycerides, reduce abnormal heart rhythms, reduce blood pressure and improve regulation of blood clotting.
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BillH99 responded:
Yes, the common western diet does lack omega-3's. And they have a lot of benefits for heat health.

But it does not seem to have any effect on atrial fibrillation.

No link between diet and AF December 9, 2010 Boston, MA - Drinking alcohol or caffeinated drinks and eating dietary fiber or fish-derived polyunsaturated fatty acids (PUFAs) did not have any effect on the development of atrial fibrillation (AF), a new longitudinal analysis of the Framingham Heart Study has found."

Omega-3 PUFA caps don't suppress paroxysmal AF in randomized trialNovember 15, 2010 |

Chicago, IL (updated) - Outcomes of studies looking at whether taking omega-3 polyunsaturated fatty acids (PUFAs) in capsules can prevent various forms of atrial fibrillation (AF) have been a mixed bag. Now, one of the largest such studies in one of the commonest forms of the arrhythmia, symptomatic paroxysmal AF, suggests that taking prescription-only omega-3 PUFA capsules (Lovaza, GlaxoSmithKline) even at the fairly high dose of 4 g/day for six months doesn't cut the risk of recurrence.

But it seems to have some benefit for heart failure.

Omega-3 PUFAs for heart failure up LVEF, cut remodeling, in rare mechanistic study September 20, 2010

San Diego, CA - Whence the clinical benefits of taking omega-3 polyunsaturated fatty acids (PUFAs) in heart failure, modest though they may be, and if they in fact exist? Few if any mechanistic studies have been done in that setting. Now there is at least one with a year of follow-up.

A small but randomized, placebo-controlled trial suggests that treatment with omega-3 PUFAs, which are typically given in the form of fish-oil capsules, may reverse echocardiographic measures of remodeling, improve both systolic and diastolic function, and lower inflammatory biomarkers in asymptomatic or minimally symptomatic heart-failure patients with nonischemic dilated cardiomyopathy.

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