A great source of healthy fats. Omega-3 fatty acids are strongly represented and thanks to this walnut is called “the brain nut”. Omega-3 fatty acids are very beneficial for our brain activity. They help to strengthen memory as well as the ability to learn. Walnut is also often recommended in weight loss diets and is rich in calcium, magnesium, zinc, iron, selenium and vitamins B1, B6, A(provitamin), E and K.