There is a number of substances which are necessary for normal activity of a human body. But the organism cannot independently make some of them. It is possible to fill up their stocks only from food. Treat such substances an omega-3.
approach of fall it is necessary to be engaged in immunity. Many problems with health can be solved with the help of cod-liver oil. It is got from a liver of a mackerel, a cod, a herring or from other sea fish.