Joanne E Arsenault1, Kenneth H Brown. 1. Program in International Nutrition, Department of Nutrition, University of California, Davis, 95616, USA.
Abstract
BACKGROUND: The recent dietary reference intakes publication provides updated information on the physiologic and dietary requirements for zinc and proposes new tolerable upper intake levels. OBJECTIVE: We analyzed dietary intake data of US preschool children to determine the prevalence of inadequate and excessive intakes of zinc. DESIGN: Diets of 7474 nonbreastfeeding preschool children in the Continuing Survey of Food Intakes by Individuals (1994-1996 and 1998) were analyzed for the intakes of zinc and other dietary components, and factors associated with zinc intake were examined. RESULTS: The mean intakes of zinc by children aged < 1 y, 1-3 y, and 4-5 y were 6.6, 7.6, and 9.1 mg/d, respectively. Less than 1% of children had usual zinc intakes below the adequate intake or estimated average requirement. The percentages of children with intakes exceeding the tolerable upper intake level were 92% (0-6 mo), 86% (7-12 mo), 51% (1-3 y), and 3% (4-5 y). Controlling for age and energy intake, zinc intake was greater in 1998 than in 1994 (P < 0.0001) and was positively associated with participation in the Women, Infants, and Children Program (P < 0.001) and with the lowest income category (P < 0.001). CONCLUSIONS: Preschool children in the United States have dietary zinc intakes that exceed the new dietary reference intakes. Zinc intakes increased during the 4 y of the study. The present level of intake does not seem to pose a health problem, but if zinc intake continues to increase because of the greater availability of zinc-fortified foods in the US food supply, the amount of zinc consumed by children may become excessive.
BACKGROUND: The recent dietary reference intakes publication provides updated information on the physiologic and dietary requirements for zinc and proposes new tolerable upper intake levels. OBJECTIVE: We analyzed dietary intake data of US preschool children to determine the prevalence of inadequate and excessive intakes of zinc. DESIGN: Diets of 7474 nonbreastfeeding preschool children in the Continuing Survey of Food Intakes by Individuals (1994-1996 and 1998) were analyzed for the intakes of zinc and other dietary components, and factors associated with zinc intake were examined. RESULTS: The mean intakes of zinc by children aged < 1 y, 1-3 y, and 4-5 y were 6.6, 7.6, and 9.1 mg/d, respectively. Less than 1% of children had usual zinc intakes below the adequate intake or estimated average requirement. The percentages of children with intakes exceeding the tolerable upper intake level were 92% (0-6 mo), 86% (7-12 mo), 51% (1-3 y), and 3% (4-5 y). Controlling for age and energy intake, zinc intake was greater in 1998 than in 1994 (P < 0.0001) and was positively associated with participation in the Women, Infants, and Children Program (P < 0.001) and with the lowest income category (P < 0.001). CONCLUSIONS: Preschool children in the United States have dietary zinc intakes that exceed the new dietary reference intakes. Zinc intakes increased during the 4 y of the study. The present level of intake does not seem to pose a health problem, but if zinc intake continues to increase because of the greater availability of zinc-fortified foods in the US food supply, the amount of zinc consumed by children may become excessive.
Authors: Janet C King; Kenneth H Brown; Rosalind S Gibson; Nancy F Krebs; Nicola M Lowe; Jonathan H Siekmann; Daniel J Raiten Journal: J Nutr Date: 2015-04-01 Impact factor: 4.798
Authors: Mohammad Yawar Yakoob; Evropi Theodoratou; Afshan Jabeen; Aamer Imdad; Thomas P Eisele; Joy Ferguson; Arnoupe Jhass; Igor Rudan; Harry Campbell; Robert E Black; Zulfiqar A Bhutta Journal: BMC Public Health Date: 2011-04-13 Impact factor: 3.295