"Functional Fiber" Doesn't Ease Hunger
Next time you eat processed food packed with fiber, don't expect to feel satisfied. A study found that added fiber does little to keep hunger at bay. Unlike naturally occurring fiber—found in whole grains, fruits, and veggies—"functional fiber" is used to beef up the fiber content of processed foods. Despite their inability to quell hunger, foods with added fiber are still better options than low-fiber foods. To see if a packaged food has added fiber, look in the ingredients for inulin (also called chicory root extract), which is a type of functional fiber.
Source: Journal of the Academy of Nutrition and Dietetics, published online July 9, 2012