Get at least one rich source of omega-3 fatty acids in your diet every day

For good health, you should aim to get at least one rich source of omega-3 fatty acids in your diet every day. This could be through a serving of fatty fish (such as salmon), a tablespoon of canola or soybean oil in salad dressing or in cooking, or a handful of walnuts or ground flaxseed mixed into your morning oatmeal.

Info source: http://www.hsph.harvard.edu/nutritionsource/omega-3/