Linseed oil is an oil obtained from the pressing of previously dried or toasted flax seeds. It is used in human and animal nutrition if squeezed from the raw seed to not alter the content of omega3 and omega6. It must be kept away from direct light and in a cool place in order to reduce the normal oxidation process it may face. Besides being used as a condiment, it is an excellent supplement; already the ancient Greeks also used the seeds directly as a food supplement to maintain good health.
Linseed oil is mainly composed of triglycerides of essential polyunsaturated fatty acids (ω3 and ω6 or vitamin F). The supply of these nutrients must necessarily come from the diet, since the body is not able to produce them from other lipid substrates. It should also be said that the use of linseed oil is particularly useful for rebalancing the ratio between ω3 and ω6, which due to the modern food style is too unbalanced in favor of the latter.