Udo?s Oil 3?6?9 Blend supplies Omega-3 and Omega-6 EFAs in a 2:1 ratio. It is a special formulation of natural unrefined oils from fresh certified organic flax sunflower sesame and evening primrose seeds as well as oils from coconut rice and bran. This formula is the result of many years of scientific study by world-renowned nutrition expert Udo Erasmus author of the best-selling book Fats That Heal Fats That Kill. Udo?s research over the years indicates that the best results come consistently from oils blended to be richer in Omega-3 than Omega-6 in a 2:1 ratio. Udo?s oil contains the ideal ratio while fish oils and pure flax oils do not.