Walnuts are rich in unsaturated fatty acids and fat-soluble vitamins, which are good supplements for the body. The polyunsaturated fatty acids in walnuts can well regulate the metabolism of the brain, and for people who often use their brains to eat two walnuts have a good benefit of improving brain metabolism and maintaining brain agility. Eating two walnuts a day can also have a very good laxative effect, in the prevention and relief of constipation benefits will also be very strong. Eating two walnuts a day has a very good role in nourishing the kidneys, because from the point of view of Chinese medicine diet, walnuts into the kidney meridian, for the waist and knee weakness, waist and leg pain, hair graying, blurred vision, if you eat two walnuts a day, by nourishing the kidney meridian has a very good benefit of alleviating the above symptoms to nourish the kidneys.