The present invention provides feed or food products for consumption by animals or humans which include respective quantities of flax oil and non-flax carbohydrate. The flax oil and carbohydrate are mixed together and simultaneously subjected to an elevated temperature of at least about 120° F. and subsequently cooled the flax oil is used at a level so that the final product contains at least about 5% by weight flax oil. It has been found that the products of the invention, when fed at effective levels, induce increased in vivo synthesis of desirable eicosapentaenoic acid (EPA).