Submitted to: Journal of American Dietetic Association
Publication Type: Abstract Only
Publication Acceptance Date: 5/25/2006
Publication Date: 8/14/2006
Citation: Hawthorne, K.M., Griffin, I.J., Lynch, F.A., Abrams, S.A. 2006. Parents significantly overestimate zinc intakes in children [abstract]. Journal of American Dietetic Association. 106(8):A19. Interpretive Summary:
Technical Abstract: Dietary surveys (e.g., CSFII) suggest that many toddlers exceed the Institute of Medicine's tolerable upper limit (UL) for zinc. Our objective was to compare zinc intakes estimated from parental report of toddlers to weighed dietary records carried out at home and in an inpatient setting at the General Clinical Research Center (GCRC). Twenty-five children, 1-4 y old, participated. Zinc intake was evaluated with a 24-h telephone dietary history and a 72-h weighed home diet. Subjects were admitted for 48 or 120 h to the GCRC at Texas Children's Hospital for weighed in-patient diets. Zinc intake from the dietary history was lower (mean +/- SD; 7.7 mg/d +/- 3.0) than from the CSFII (9.3 +/- 3.1, p = 0.016) but 15 children (60%) exceeded the UL for zinc (7 mg/d). Zinc intake from the weighed home record (4.7 +/- 1.7) was significantly lower than from the dietary history (p = 0.0002). At the GCRC, the diet provided contained a similar amount of zinc (6.6 +/- 2.2) as reported in the dietary history (p = 0.13), but the actual dietary zinc intake consumed was significantly lower (4.4 +/- 1.6, p < 0.0001) and was similar to the weighed home record (p = 0.30). No child exceeded the UL during the in-patient stay. Parents significantly overestimate their child’s dietary zinc intake. The incidence of very high zinc intakes is much lower than reported using dietary histories.