Effect of micronutrient supplementation on the growth of preschool children in China

• Published in: Biomedical and environmental sciences Vol. 15; no. 3; p. 196
• Main Authors: Yang, Yue-Xin, Han, Jun-Hua, Shao, Xiao-Ping, He, Mei, Bian, Li-Hua, Wang, Zhu, Wang, Guo-Dong, Men, Jian-Hua
• Format: Journal Article
• Language: English
• Published: China 01.09.2002
• Subjects: Body Height; Calcium - administration & dosage; Calcium - pharmacology; Child Development; Child, Preschool; China; Dietary Supplements; Female; Growth Disorders - diet therapy; Humans; Male; Nutritional Status; Vitamin A - administration & dosage; Vitamin A - pharmacology; Weight Gain; Zinc - administration & dosage; Zinc - pharmacology; China
• ISSN: 0895-3988

To study the relationship between micronutrient supplementation and children growth. A double-blind, placebo-controlled trial was conducted in 156 growth retarded preschool children. They were randomly assigned to five groups: supplemental control (S-control, n = 28), zinc supplementation (+Zn, 3.5 mg Zn/day, n = 34), zinc and calcium supplementation (+ZnCa, 3.5 mg Zn + 250 mg Ca/day, n = 37), zinc and calcium and vitamin A supplementation (+ZnCaVA, 3.5 mg Zn + 250 mg Ca + 200 g VA/day, n = 28), Calcium, and vitamin A supplementation (+CaVA, 250 mg Ca + 200 g VA/day, n = 29). Another 34 children with normal height were selected as normal control (N-control). Supplementation continued for twelve months. The height gain in +Zn group (7.84 cm per year) and +ZnCa group (7.70 cm per year) was significantly higher than that in S-control group (6.74 cm per year, P < 0.05); The weight gain in +ZnCaVA group (2.55 kg per year) and +CaVA group (2.57 kg per year) was also significantly higher than that in S-control group (2.19 kg per year, P < 0.05); The average days of illness in each supplementation group were lower than that in S-control (13 days per year compared with 23 days per year). No significant difference was observed on bone age. Zinc and Zinc + Calcium supplementation can improve the height gain, and vitamin A can improve weight gain in growth retarded preschool children, but do not affect the maturity of bone. Micronutrient supplementation can lower the morbidity of these children.