info from waitrose
What are the sources of Omega 3?
Omega 3 fats occur naturally in seeds as alpha linolenic acid (ALA). However, the most effective Omega 3 fats occur naturally in oily fish as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA).
Good sources of ALA include: linseed (flaxseed) oil, linseeds, soya bean oil, pumpkin seeds, walnut oil, rapeseed oil and soya beans.
The body can convert ALA into EPA and DHA, but not very efficiently. This is why oily fish plays such an important role in our diet. Oily fish contains EPA and DHA in a 'ready made' form that the body can use easily.
The main sources of oily fish in the UK include salmon, trout, mackerel, herring, sardines, pilchards and kippers, either fresh, frozen, canned or smoked. Tinned tuna does not count as it does not contain the high levels of oils found in fresh and frozen tuna.