Eating walnuts does not make one smart. Walnuts are rich in linoleic acid and DHA, which are essential nutrients for the development of the brain and visual function, and can help maintain the nutritional health of the retina and brain. Eating walnuts regularly can provide the brain with sufficient linoleic acid, linolenic acid and other smaller molecules of unsaturated fatty acids. Walnuts are rich in unsaturated fatty acids (more than 80%), as well as 15% to 20% of high-quality protein and more than a dozen important amino acids, as well as a certain amount of vitamins and calcium, iron, zinc and other nutrients. Although eating walnuts can not make people become smart, but eat some walnuts every day in moderation is indeed conducive to brain health, but pay attention to eat walnuts should not be too much, 4-5 per day the best, otherwise it is easy to get fat.