The role of food nuts are as follows: 1, to laxative, because nuts are rich in plant fat, by lubricating the intestines, in the prevention and treatment of constipation will be very obvious; 2, to provide rich energy for the body, because the fat contained in nuts per 1 gram can produce 9 kcal of heat, and thus in the role of restoring strength, providing energy, the role of nuts will be Very obvious; 3, to improve the level of intelligence, stable mood, because nuts are rich in unsaturated fatty acids, for the metabolism and regulation of the nervous system has a positive effect, and thus for the maintenance of normal mood has an important role.