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  • Title: Bioavailability of iron and zinc from a multiple micronutrient-fortified beverage.
    Author: Avalos Mishaan AM, Zavaleta N, Griffin IJ, Hilmers DC, Hawthorne KM, Abrams SA.
    Journal: J Pediatr; 2004 Jul; 145(1):26-31. PubMed ID: 15238902.
    Abstract:
    OBJECTIVE: To test the hypothesis that micronutrient beverages can provide the daily iron and zinc needs of small children. STUDY DESIGN: Forty children aged 6 to 9 years were recruited (Lima, Peru). For 4 weeks, they received a daily serving of a beverage containing multiple micronutrients. Over 2 consecutive days, subjects received stable isotope-labeled servings of the beverage with and without a meal as well as an intravenous dose of zinc. Iron and zinc bioavailability were assessed using mass spectrometry. RESULTS: Iron absorption was significantly lower with a meal than without (9.8 +/- 6.7% versus 11.6 +/- 6.9%, P=.04), but zinc absorption was not (24.5 +/- 10.7% versus 22.8 +/- 7.6%, P=.2). In either case, however, a single daily serving provided most of the iron and zinc requirements for the children. CONCLUSIONS: Single daily servings of multinutrient-fortified beverages can meet much of the mineral needs for small children. Food has a small inhibitory effect on iron, but not zinc, absorption; therefore, these beverages can be efficacious even when given with a meal.
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