SOURCES:
American Heart Association: “Whole Grains and Fiber.”
Institute of Medicine: "Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids."
Slavin, J. Journal of the American Dietetic Association, 2008.
Uptodate.com: “Patient information: High-fiber diet (Beyond the Basics),” Arnold Wald, MD.
USDA Nutrient Database.