Abstract
The objective of the study was to determine whether iron and micronutrient status is improved with an increased amount of meat in the diet. To this end, a longitudinal prospective study with infants recruited at 4 mo and followed until 24 mo of age was undertaken. One hundred ninety-eight infants formed the original study cohort; 48 withdrew before the end of the study. Subjects were classified as nonmeat eaters or as mixed (red and white)-meat eaters subgrouped into tertiles depending on the meat content reported in diet diaries. Seven-day weighed food records were recorded at 4, 8, 12, 16, 20, and 24 mo. Blood samples taken at 4, 12, and 24 mo were analyzed for parameters of iron and micronutrient status. Iron intake increased during the first year, thereafter remaining constant. The percentages of subjects with hemoglobin values below 110 g/L were 34.1, 23.1, and 13.4 at 4, 12, and 24 mo, respectively. For parameters of iron status, the number of results below the reference range was determined for each diet group and a significant negative relationship between serum iron and meat intake at 12 mo of age was seen (p<0.023). There was a trend for hemoglobin concentrations to be inversely related to the meat intake, at the same age (p<0.068). No effects on zinc or copper status were seen. We conclude that a weak association between dietary meat and iron/Hb suggests a positive role for red meat. There was no disadvantage to the nonmeat-eating infants with respect to zinc or copper.
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Taylor, A., Redworth, E.W. & Morgan, J.B. Influence of diet on iron, copper, and zinc status in children under 24 months of age. Biol Trace Elem Res 97, 197–214 (2004). https://doi.org/10.1385/BTER:97:3:197
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DOI: https://doi.org/10.1385/BTER:97:3:197