Walnuts,"Brain Nuts", have been classed as one of daily healthy foods, unique in that they contain a high amount of Omega-3 fatty acids. If you want to make sure that you are getting enough Omega-3s, you can make a simple change by including walnuts in your diet. Walnuts are an excellent snack food because in addition to being a good source of Omega-3 essential fatty acids, they also contain important minerals and vitamins, carotenoids, protein, and antioxidants such as melatonin.