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Associations between dietary micronutrient intake and blood lead level in Uruguayan children
Author(s) -
Roy Aditi,
Quierolo Elena,
Peregalli Fabiana,
Mañay Nelly,
Kordas Katarzyna
Publication year - 2011
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.25.1_supplement.32.6
Evidence suggests an association between micronutrient status and lead exposure. This cross‐sectional study examined the relation between dietary intakes of micronutrients (calcium, iron, vit C) and blood lead level (BLL) in 6–7 year old children (n=60) from Montevideo, Uruguay. Nutrient intake was assessed by two 24 hr dietary recalls. Mean (SD) BLL was 5.0 μg/dL (2.4), with 5% and 38.3% children having BLL>10 μg/dL and BLL>5 μg/dL, respectively. Mean (SD) intake of Ca, Fe and vit C was 751.4 (245.9) mg/d, 12.9 (8.5) mg/d and 61.4 (56.6) mg/d, respectively. 83.3% children had Ca intake below the AI (800 mg/d). Intakes of Fe and vit C were adequate. Nutrient intakes were positively correlated with total daily energy and Fe intake was correlated with intakes of vit C. Higher dietary Ca intake was associated with lower BLL in energy adjusted regressions. Children in highest tertile of Ca intake had 1.3 μg/dL lower BLL (p< 0.1) and 94% lower likelihood (p< 0.05) of having BLL> 5 μg/dL than children in lowest tertile. No significant associations were found between BLL and other two nutrients. There were no interactions between Fe and Ca or Fe and vit C. Higher intake of calcium may lower BLL in children. Grant Funding Source: NIEHS