Oily fish such as mackerel, salmon, sardines and herring are an excellent source of Omega 3. Seeds such as pumpkin and sunflower are also a great source of Omega 3s. Nuts such as almonds and walnuts are a good source of proteins, fiber, and omega 3s. Avocado is also a great source of Omega 3s and other essential vitamins and minerals. Whole grain products such as brown rice, wheat, oats and barley are great sources of fiber, as well as essential B vitamins. Eggs are packed with protein and are a great source of zinc and cholesterol, both of which are essential for brain functioning. Spinach and broccoli are also great sources of iron and Vitamin K, both of which are important for brain health.