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Phosphorus Metabolism of Preschool Children

New York State College of Home Economics, Cornell University, Ithaca

Phosphorus metabolism has been studied in eight preschool children, on phosphorus intakes of 896 to 1374 mg/day, or 55 to 76 mg/kg/day. The values for retentions per kilogram of body weight were in line with those reported in the literature, average values varying from 3.5 to 10.8 mg/kg. The basal diet was supplemented with ascorbic acid, potassium citrate, and orange juice as indicated. None of the supplements caused significant alterations in phosphorus retentions, although rather wide variations occurred from period to period. This might indicate that other factors than diet are largely responsible for fluctuations in phosphorus retentions.