Plant Residue and Bacteria as Bases for Increased Stool Weight Accompanying Consumption of Higher Dietary Fiber Diets
Shin’ichi Kurasawa, PhD, Valerie S. Haack, MS, RD, and Judith A. Marlett, PhD, RD
Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin (V.S.H., J.A.M.), Laboratory of Nutrition, Faculty of Home Economics, Kanto Gakuin Women’s Junior College, Yokohama, JAPAN (S.K.) E-mail: jmarlett@nutrisci.wisc.edu
Objective: Stool diluting effects of relatively inert material, such as unfermentable dietary fiber, has been proposed as an effect of fiber beneficial to the colon. Stool dilution by increasing bacterial mass may be beneficial or deleterious, depending on bacterial metabolic products. The purpose of this study was to determine the basis for stool weight when two stepwise increases of fiber from all classes of fiber-containing foods were consumed. Continue reading