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Is a high-fiber diet safe for children?

OBJECTIVES
Although dietary fiber is associated with important health benefits in childhood, there have been concerns that very high fiber diets may result in adverse health effects. This report reviews the major safety concerns associated with consumption of very high fiber diets, estimates the amount of fiber that may cause adverse physiologic effects in children, and proposes safe levels of dietary fiber intake for children and adolescents.


METHODS
Published studies on dietary fiber intake in childhood were reviewed to determine major safety concerns, to document adverse effects, to characterize subjects involved and the dose and type of fiber consumed, and to estimate potential relevance to US children and adolescents. Levels of dietary fiber reported to have adverse health effects were compared with recommended levels of fiber intake for children older than 2 years of age.


RESULTS AND CONCLUSIONS
A review of the scientific literature suggests that a small loss of energy, protein, and fat may occur with a high intake of dietary fiber. However, this small loss of energy is unlikely to be significant to children consuming adequate levels of major nutrients, especially at conservative fiber intakes as recommended by the American Health Foundation's age plus 5 formula. In addition, it is estimated that even with a doubling of current dietary fiber, there is unlikely to be an adverse effect on serum vitamin and mineral concentrations in healthy US children consuming a balanced diet containing adequate levels of nutrients. Thus, evidence suggests that for US children, a moderate increase in dietary fiber is more likely to be healthful than harmful.