Dietary fiber

Abstract

Most of our understanding of the physiologic effects of dietary fiber are derived from studies in adults. These investigations have indicated the potential problems with fiber consumption are most likely to occur if isolated polysaccharides or nonpurified fiber supplements are consumed excessively. Such problems include intestinal obstruction and significant reductions in nutrient availability. Inclusion of foods that contain dietary fiber such as fruits, vegetables, beans, and whole-grain products is unlikely to result in complications for most individuals. Young children may need to consume smaller servings of these foods than adults; however, their inclusion in the diet is an important part of meeting dietary recommendation for fiber intake. Excess consumption of fiber-supplemented foods (e.g., bran cereals) should be monitored to avoid appetite suppression that could limit selection of foods to maintain a balanced diet.