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Fatty Fish
Fatty fish are rich in Omega-3's EPA and DHA
The best resources for omega-3's can be found in fatty fish living in cold waters like the Northern part of the Atlantic ocean. Ideal types of fish are salmon, herring, anchovies, tuna, shark liver oil, sardines and ale.
Epidemiological and observational studies
Epidemiological and clinical trials have shown that omega-3 fatty acids reduce CVD incidence. Large-scale epidemiological studies suggest that people at risk for coronary heart disease benefit from consuming omega-3 fatty acids from plants and marine sources
The ideal amount to take isn’t clear. Evidence from prosective secondary prevention studies suggests that taking EPA+DHA ranging from 0.5 to 1.8 grams per day (either as fatty fish or supplements) significantly reduces deaths from heart disease and all causes. For alpha-linolenic acid, a total intake of 1.5–3 grams per day seems beneficial.
Randomized clinical trials have shown that omega-3 fatty acid supplements can reduce cardiovascular events (death, non-fatal heart attacks, non-fatal strokes). They can also slow the progression of atherosclerosis in coronary patients. However, more studies are needed to confirm and further define the health benefits of omega-3 fatty acid supplements for preventing a first or subsequent cardiovascular event. For example, placebo-controlled, double-blind, randomized clinical trials are needed to document the safety and efficacy of omega-3 fatty acid supplements in high-risk patients (those with type 2 diabetes, dyslipidemia, hypertension and smokers) and coronary patients on drug therapy. Mechanistic studies on their apparent very positive effects on sudden death also are needed.
Increasing omega-3 fatty acid intake through foods is preferable. However, coronary artery disease patients and those not eating fatty fish on a regular basis may not be able to get enough omega-3 by diet alone. These people may want to talk to their doctor about taking a supplement. Supplements also could help people with high triglycerides, who need even larger doses. The availability of high-quality omega-3 fatty acid supplements, free of contaminants, is an important prerequisite to their use
Studies:
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