Fiber can be defined as that part of food which is not easily digestible but which mainly helps in making easy and smooth bowel movement. Fiber is present only in plant foods and is not found in animal foods such as meats and dairy foods. There are two types of fibers which are soluble fiber and insoluble fiber. That which dissolves in water is called soluble fiber and the one that does not dissolve is called insoluble fiber.
Soluble fiber is available in vegetables and fruits. This type of fiber slows down the emptying of the stomach and causes a feeling of fullness which makes us stop eating. It also causes slow absorption of food resulting in less production of insulin preventing weight | fat gain.
Insoluble fiber is found in whole grains. This type of fiber mainly acts as nature's laxative and helps in easy excretion of waste products out of the body.
High fiber diet is low fat diet and requires lots of water intake. This satisfies the appetite centers of the brain and induces a sense of fullness making you stop eating. Fiber diet stops the absorption of fat and make the metabolism use more energy for digestion. Fiber acts like a web trapping fat particles and excreting them without allowing fat to be absorbed by the body.
Fiber is also helpful in decreasing the risk of bladder cancer, breast and uterine cancer and colon cancer.
Popcorn is found to be the best of cereal foods full of protein and very high in fiber. It is a non-fattening food and if taken regularly improves bowel movement to keep you healthy and fit.