Fiber is a type of carbohydrate that the body can't digest.Dietary fiber (fibre), sometimes called roughage, is the indigestible portion of plant foods that pushes food through the digestive system, absorbs water and eases defecation. It acts by changing the nature of the contents of the gastrointestinal tract, and by changing how other nutrients and chemicals are absorbed
Food sources of dietary fiber are often divided according to whether they provide (predominantly) soluble or insoluble fiber. Plant foods contain both types of fiber in varying degrees according to the plant’s characteristics.
Fiber adds bulk to your diet, making you feel full faster---May reduce appetite.
You can curb your hunger by increasing your intake of dietary fiber, which is filling, so you feel full but eat less. For these diet tips, experts recommend eating more fruits, vegetables and wholegrain cereals.