Abstract
Lead exposure and nutritional factors are both associated with cognitive performance. Lead toxicity and nutritional status are also associated with each other. We examined whether nutritional status variables account for part or all of the association between cognitive performance and lead exposure. First-grade children (n = 724) ages 6-8 y, attending Mexican public schools located in the vicinity of a metal foundry were asked to participate and 602 enrolled in the study. Blood lead, iron status, anemia, anthropometry, and cognitive function were assessed. Results from 7 standardized tests are presented here. The mean blood lead concentration was 11.5 +/- 6.1 micro g/dL (0.56 +/- 0.30 micro mol/L) and 50% of the children had concentrations >10 micro g/dL (0.48 micro mol/L). The prevalence of mild anemia (
Original language | English |
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Pages (from-to) | 363-71 |
Number of pages | 9 |
Journal | Journal of Nutrition |
Volume | 134 |
Issue number | 2 |
Publication status | Published - Feb 2004 |
Keywords
- Anemia
- Body Height
- Child
- Cognition
- Environmental Exposure
- Female
- Humans
- Intelligence Tests
- Lead
- Male
- Mexico
- Nutritional Status
- Social Class