Raw walnuts, which make for one of the healthiest snacks in the world. (250 g)
Walnuts provide healthy fats, fiber, vitamins, and minerals. It promotes a healthy cardiovascular system with oleic acid, omega-3s, omega-6s, alpha-linoleic acid, and linoleic acid; contains polyunsaturated fats, polyphenols, and vitamin E that may help reduce oxidative damage and inflammation in brain cells.
Studies show that consuming walnuts were linked to improved mental flexibility and better memory.