As a result of food, vegetables and fruits containing more cellulose should be increased, and coarse and dreary miscellaneous grains such as standard flour, potatoes, corn and barley should be properly ingested. Oily food, cold boiled water and honey all help to prevent constipation. Eat more foods rich in B vitamins and moistening intestines, such as coarse grains, beans, tremella, honey and so on. Eat a certain amount of vegetables and fruits every day.