Cod Liver Oil

While a helpful form of Omega-3 can be found in flax seed, walnuts and a few other foods, the most beneficial form of Omega-3 is found in fish. That's because fish contains 2 types of fatty acids, EPA and DHA, which are essential in maintaining good health. Another great benefit of Cod Liver Oil, is that it is has high concentrations of Vitamin A and Vitamin D.