Walnuts support brain health because of their high concentration of polyunsaturated fats, and are a powerhouse of polyphenols, both important in preventing cognitive degeneration. Facebook Twitter Pinterest Recipes Including This Superfood Mini Walnut & Fig Galettes Dried Figs Stuffed with Arugula and Walnut Pate Chicken Falafels with Mint, Blueberries & Walnuts