Abstract
A large proportion of the milk consumed by infants in Chile is distributed by a National Food Supplementary Program. Efforts to prevent iron deficiency by milk fortification started several years ago. Initially a field study involving the simple addition of ferrous sulfate to a low-fat powdered milk was only partially successful due to the relatively low iron absorption from this product. Following the observation that the enrichment of milk with ascorbic acid markedly improved iron bioavailability, a new fortified formula was developed and has been tested in the field since 1976. This is powdered full-fat milk, biologically acidified and fortified with 15 mg Fe, as ferrous sulfate, and 100 mg ascorbic acid per 100 g powder. In a pilot study, 276 infants spontaneously weaned before 3 months of age received the fortified milk, and 278 infants receiving unfortified milk served as controls. At the end of the study (15 months of age) anemia (Hb less than 11 g/dl) was present in 25.7% of unfortified infants compared with only 2.5% in those fortified. Saturation of Transferrin less than 9% was present in 33.8% and serum ferritin less than 10 micrograms/l in 39.1% of the nonfortified infants. The figures for the fortified group were 7...Continue Reading
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