Fiber is a type of carbohydrate that the body can't digest. Though most carbohydrates are broken down into sugar molecules, fiber cannot be broken down into sugar molecules, and instead it passes through the body undigested. Fiber helps regulate the body's use of sugars, helping to keep hunger and blood sugar in check. -
Harvard School of Public Health
Fiber is necessary for healthy bowel function and elimination. In todays modern world where the majority of food has
been highly processed, the fibrous portion of grains has been removed leaving behind a
white, nutritionally depleted substance most people believe is rice or bread.
Removal of the fiber not only strips the substance of it's nutrional value, it also eliminated the fiber which is necessary for good health. There are two basic types of fiber: soluble and insoluble. Soluble fiber is found in foods such as fruits, seeds, brown rice, barley and oats. It works mainly by helping to produce a softer stool. It also chemically prevents or reduces the absorption of certain substances into the bloodstream like excessive amounts of ingested sugars. Soluble fiber also stimulates the liver to give up stored cholesterol for eventual elimination.
Insoluble fiber is found in whole grains, vegetables, legumes and the outside of seeds. This fiber works like a sponge, absorbing many times its weight in water and swelling up inside the intestines. Insoluble fiber passes through the digestive system nearly intact, absorbing toxins during transit and encouraging normal bowel movement. The result of ingesting more fiber is more efficient elimination.
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