If you’ve been tracking the science, then you know that foods rich in omega-3 fatty acids may help to prevent harmful inflammation in your body. Omega-3 fatty acids may help to prevent heart disease and strokes, and control lupus, eczema and rheumatoid arthritis. We can’t make these essential fatty acids, so we need to get them from food sources. Two crucial ones—EPA and DHA—are primarily found in fish. But, what to do if you don't like or eat fish?