There is quite a lot of evidence suggesting that fish oil, a mixture of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) has strong anti-inflammatory properties and may also improve lipid profiles and heart attack risk. You can read an excellent summary of a review that looked at this data here: Omega-3 Polyunsaturated Fatty Acids and Cardiovascular Disease Protection (American College
