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The intelligence quotient and malnutrition. Iron deficiency and the lead concentration as confusing variables

Vega-Franco, L.; Mejía, A.M.; Robles, B.; Moreno, L.; Pérez, Y.

Boletin Medico del Hospital Infantil de Mexico 48(11): 826-831

1991

ISSN/ISBN: 0539-6115
PMID: 1768360
Document Number: 381298
This study gave us the opportunity to know the roles iron deficiency and the presence of lead in blood play, as confounding variables, in relation to the state of malnutrition and the intellect of those children. A sample of 169 school children were classified according to their state of nutrition, their condition in reference to serum iron and lead concentrations. In addition, their intelligence was evaluated. The results confirmed that those children with lower weights and heights registered lesser points of intelligence; in fact, iron deficiency cancels out the difference in favor of those taller and weighing more. Lead did not contribute as a confounding variable, but more than half of the children showed possible toxic levels of this metal.

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