Omega-3 fatty acids reduce pain and swelling, and also prevent the blood from clotting easily. The body doesn't produce many of its own omega-3 fatty acids. Fish that are especially rich in these oils include mackerel, herring, tuna, and salmon.
The benefits of fish oil seem to come from its omega-3 fatty acid content. It is rich in two important omega-3 fatty acids called eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).
