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Iron Deficiency, Lead Poisoning, and Development—Reply
Betsy Lozoff, MD;
Elias Jimenez, MD;
Julia B. Smith, EdD
Arch Pediatr Adolesc Med. 2007;161(5):523-524.
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In reply
In our report of cognitive effects of iron deficiency in infancy depending on socioeconomic status (SES),1 we emphasized that iron deficiency is not the only developmental risk associated with low SES. Dr Petrone's letter draws attention to another important risk factor: elevated lead levels. They are associated with both low SES and iron deficiency and thus might further compromise development. We received related comments about other concomitants of low SES. John F. DiTragilia, MD, inferred from our paper that "low SES is much more important than Fe [iron] deficiency in depressing cognitive scores" (e-mail correspondence, November 2006). Greg Duncan, PhD, Edwina S. Tarry Professor of Human Development and Social Policy at Northwestern University, pointed out that SES effects on child development often disappear when maternal IQ is taken into account (personal communication, November 2006). Because data on maternal . . . [Full Text of this Article] AUTHOR INFORMATION
RELATED LETTER
Iron Deficiency, Lead Poisoning, and Development
Louis R. Petrone
Arch Pediatr Adolesc Med. 2007;161(5):523.
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RELATED ARTICLE
Double Burden of Iron Deficiency in Infancy and Low Socioeconomic Status: A Longitudinal Analysis of Cognitive Test Scores to Age 19 Years
Betsy Lozoff, Elias Jimenez, and Julia B. Smith
Arch Pediatr Adolesc Med. 2006;160(11):1108-1113.
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