Omega-3 fatty acids are commonly associated with heart health, but their potential role in brain health may be equally significant, according to a report by registered dietitian nutritionist Molly Knudsen, M.S., RDN. The report, published Aug. 19, 2026, stated that DHA, an omega-3 found in fatty fish, is a major structural component of the brain, and it noted growing interest in the relationship between omega-3s and cognitive decline. A separate report analyzing multiple clinical trials and population studies found that increasing intake of omega-3 fatty acids is associated with significant reductions in heart disease risk and cognitive decline among women…

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