Omega-3 fatty acids
In a Scientific Position statement, the AHA (American Heart Association) recommends “that healthy people get adequate nutrients by eating a variety of foods in moderation, rather than by taking supplements,” making one exception for omega-3 fatty acid supplements.
Because fish intake has been associated with decreased risk of heart disease, the AHA advises that patients without documented heart disease eat a variety of fish—preferably omega-3-containing fish, such as salmon, herring and trout—at least twice a week. Patients with documented heart disease are advised to consume about 1 gram of eicosapentaenoic acid (EPA) + docosahexaenoic acid (DHA) types of omega-3 fatty acids, “preferably from fish, although EPA+DHA supplements could be considered,” after consulting with a physician first.
For people with high triglycerides (blood fats), ADA recommends 2 to 4 grams of EPA + DHA per day in the form of capsules and under a physician’s care.
According to Mayo Clinic, “omega-3 fatty acids are a type of unsaturated fatty acid that’s thought to reduce inflammation throughout the body, “which can damage blood vessels and lead to heart disease. What’s more, the fatty acids “may decrease triglycerides, lower blood pressure, reduce blood clotting, boost immunity and improve arthritis symptoms, and in children may improve learning ability.”