Walnut spread. Walnut is useful for diseases of the cardiovascular system: potassium and magnesium in its composition strengthen the walls of blood vessels, normalize blood pressure and lower cholesterol. The high iron concentration in these nuts helps fight anemia and anemia. Zinc and iodine, which are part of walnuts, are beneficial for the skin, hair, nails and thyroid gland. No preservatives, artificial flavors or colors.