There are three important omega 3 fatty acids:

1. ALA – alpha-linolenic acid; found in a wide range of foods.
2. EPA – eicosapentaenoic acid; found mainly in fish.
3. DHA – docosahexaenoic acid; found mainly in fish and seaweed.

Our body can convert ALA into EPA and DHA. ALA is efficiently converted to EPA, but it may require large amounts of ALA to produce optimal amounts of DHA.

Omega 3 fatty acids are produced by sea plants. Fish are a source of omega 3 because they eat plants or other fish that may have eaten plants. It may be possible to get sufficient omega 3 from plants.