The main source of fatty acids polyunsaturated EPA and DHA (acid Omega-3 of long chain) are the foods of marine origin and they are in greater proportion in the blue fish. EPA and DHA are Omega that reduces the risk of suffering diseases, among others the cardiovascular ones. The linolenic is also Omega-3 but it does not make the function of EPA and DHA. These essential fats cannot be obtained through other foods nor them can be prodeced by the body. They are obtained, through foods rich in natural fat of the fish, as the basic salmon and are essential because they are basic component for the life of the cells in the body and necessary to reconstruct the existententes cells and the production of new ones. Multitude of scientific studies of all the universities of the world, shows that the oils of fish help the cardiovascular health and improve the flexibility of the liver, besides preventing the body from many diseases.