What You Need to Know About Omega-3 Fatty Acids
High doses may increase your risk of a heart condition.
Studies in the 1970s demonstrated very low coronary heart disease rates among Eskimos in Greenland who consumed large amounts of seafood. Since then, much research has focused on how long-chain omega-3 polyunsaturated fatty acids in fish oil, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) are important contributors to these benefits.
I want to share with you some of my concerns. There appears to be a dose-related risk for a heart condition (atrial fibrillation, a condition characterized by an irregular and often rapid heartbeat) with omega-3 fatty acid intake, at least with high doses of the supplement.
There have been three historic (and one recent) randomized clinical trials that support the supplement and atrial fibrillation connection. The VITAL-RHYTHM study is the latest clinical trial to evaluate the association. Led by Christine M. Albert, MD, MPH of Cedars-Sinai Medical Center (Los Angeles), the research team discovered no effect of omega-3 fatty acid supplements on the risk of atrial fibrillation.
The researchers also believe the VITAL-RHYTHM study is the only randomized trial to assess the effect of vitamin D3 supplementation on atrial fibrillation risk. They found no…
