The effect of cornmeal: 1, can reduce the incidence of diabetes, because cornmeal itself is relatively low glycemic capacity, while cornmeal contains dietary fiber can slow down carbohydrates, that is, the speed and degree of absorption of sugar, there is a very good stabilization of blood glucose, reduce the incidence of diabetes effect. 2, can reduce the incidence of overweight and obesity, because of cornmeal in the dietary fiber can absorb the expansion of increased Satiety, which can avoid the intake of other excessive food, in the prevention of overweight and obesity is very obvious. 3, can laxative, because cornmeal in the dietary fiber can mechanically stimulate intestinal peristalsis to promote defecation, there is a very good role in the prevention of constipation.