what is fiber
Fiber is that part of plant foods that your body can't digest or absorb. It is also referred to as roughage or bulk. By classification, fiber is considered an indigestible carbohydrate, explains Dr. Elaine Rancatore of 2RHealth.But fiber is very different from other carbohydrates -- and much lower in calories!iber provides a number of very important health benefits, says nutrition and wellness coach Michelle Pfennighaus 1  : Fiber slows the absorption of sugar into your bloodstream to help maintain stable blood sugar levels and help prevent Type 2 diabetes. 2  Fiber lowers bad LDL cholesterol and promotes heart health.