Abstract
BackgroundThe growth and development of children is influenced not only by heredity but also by environmental factors, including nutrition and temperature. The aim of this study was to evaluate the growth and nutritional status of preschool children in Daxing’anling, the coldest region of China.MethodsA descriptive, cross-sectional survey was performed among preschool children aged 3 to 6 years by stratified cluster sampling in Daxing’anling. The children’s parents completed the questionnaires. Height, body weight and head circumference were measured, and Z scores for weight for height, weight for age, height for age and head circumference for age were evaluated. Anthropometric data were compared with World Health Organization standards and China’s growth references. The levels of vitamin A, E and 25-(OH)-D3 in serum were detected by high-performance liquid chromatography.ResultsA total of 305 children were recruited. The average height of the preschool children was lower than China’s growth reference but higher than the WHO standard. More than half of the preschool children ranged from -1 SD to +1 SD. Both the values of weight for height and of weight for age were positive and higher than the WHO standards (P<0.01), with a significant difference between boys and girls (P<0.01). The incidence of stunting, wasting, and underweight were 4.59%, 2.95% and 2.30%, respectively, although the prevalence of overweight and obesity was high (18.03% and 6.89%, respectively). The rates of vitamin A and D deficiency were 7.54% and 88.85%, respectively. Vitamin A was also positively associated with 25-(OH)-D3.ConclusionsThe growth and nutritional status of preschool children were generally good, although the double burden of malnutrition was observed. Vitamin D deficiency should be paid much attention to. It is necessary and urgent to carry out nutritional interventions for health.