What is the best source of EPA and DHA?

The best sources of EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are fatty fish such as salmon, mackerel, sardines, and herring. These fish are rich in omega-3 fatty acids, which are essential for heart and brain health. For those who don't consume fish, algal oil supplements are a plant-based alternative that provides both EPA and DHA.