Brown rice has a greater food value than white, since the outer brown coatings contain the proteins and minerals; the white endosperm is chiefly Carbohydrate. With high nutrients, rice is a good source of insoluble fiber, which is also found in whole wheat, bran, and nuts. Insoluble fiber reduces the risk of bowel disorders and fights constipation. Among other nutrients, rice is rich in carbohydrates, the main source of energy, low in fat, contains some protein and plenty of B vitamins.