title: Estimated protein intakes of toddlers: predicted prevalence of inadequate intakes in village populations in Egypt, Kenya, and Mexico.
abstract: This paper presents a probability assessment of the adequacy of protein intakes of toddlers (aged 18-30 mo) in study communities in Egypt, Kenya, and Mexico judged in relation to FAO/WHO/UNU estimates of requirements. Effects of supplementing amino acid intakes, or of assuming lower bioavailability for lysine are also considered. In Egypt and Mexico existing protein intakes of toddlers were adequate. In Kenya existing intakes were marginal. Total protein intake was low and often lysine or tryptophan concentration was low. If Kenyan intakes met estimated energy requirements, protein intakes would be adequate. We conclude that protein intake is unlikely to be a primary limiting factor for toddler growth and development, and the benefit to be expected from increasing the intake of limiting amino acids is marginal. Reported associations of animal-source protein and energy with growth, size, and psychologic function of these toddlers are unlikely to be causally attributable to inadequacy of protein intakes.
authors.affiliation: Department of Nutritional Sciences, University of Toronto, Canada.
authors.forename: G H
authors.initials: GH
authors.lastname: Beaton
authors.forename: D H
authors.initials: DH
authors.lastname: Calloway
authors.forename: S P
authors.initials: SP
authors.lastname: Murphy
mesh_terms: D000596:Amino Acids / Q000008:administration & dosage; D004034:Diet Surveys; D004044:Dietary Proteins / Q000008:administration & dosage*; D004534:Egypt; D002149:Energy Intake; D005260:Female; D006801:Humans; D007223:Infant; D007630:Kenya; D008239:Lysine / Q000008:administration & dosage; D008297:Male; D008800:Mexico; D009751:Nutritional Requirements
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D008239:Lysine