| Objective: To comprehend the level of the total blood calcium, magnesium, copper, iron, zinc and leads of children aged 3-6 in Lanzhou City, as well as influence of several mineral elements on the physical development of children, and thus provide reference for guidancing health-care workers and parents to prevent deficiency mineral elements and lead poisoning. At the same time, investigate the nutrition knowledge and impact on their eating habits and dietary factors of production of the main producers of food in children's home,to provide a comprehensive basis for all parents of the knowledge about nutrition and nutrition for children.Methods: 388 children of Lanzhou City's four kindergarten were choiced, to acquisite their fingertip peripheral blood and ditermine determined blood calcium, magnesium, copper, iron, zinc, lead and hemoglobin concentration level, and measured all the children's height, weight, chest circumference, head circumference and evaluated physical development using reference standards. Then surveied their families's main producer of dietary's nutrition knowledge and eating behavior, and analysised the survey results.Results: The four elements of calcium, magnesium, copper and iron of children aged 3-6 in Lanzhou City was in the middle level compared with other cities, and the level of the blood iron were higher than that of other urban children.The lack of zinc was the highest rate about 38.92%, followed by the lack calcium and iron.The lead poisoning rate is 12.63% in the tested childhood, and which was the highest rate about 28.57% in the three-years-old group childhood.Children aged 3-6 in Lanzhou City were well in the growth and development, only 0.5 percent of the children are low weight (WAZ <-2), 0.8 percent of the children belong to growth retardation (HAZ <-2), and 0.8 percent of children are the thin (WHZ<-2). 28.6 percent of the children head circumference were below average, 54.4 percent of the children chest circumference were below average. Anemia prevalence rate of children is 10.8%, 6-years-old group of children had the highest prevalence rate about 17.2 %.Zinc deficiency group of children's height was lower than that of nomal children, but the difference was not statistically significant (P>0.05). Compareding the HAZ, WAZ, WHZ of lead poisoning of children and normal children, the consequence was no statistically significant difference (P>0.05). The multiple regression analysis showed that the level of blood lead and iron were significantly correlated with the concentration of hemoglobin of children , which negatively correlated with the level of blood lead.The result showed that children's family meals producer's score of nutrition knowledge was an average of 8.65 points.There was no significant difference (P> 0.05) among nutrition knowledge score of different identity of the family meal producer's .The impact factors to meal producer's nutrition knowledge included occupation, the interest on the nutrition knowledge and educational background. Dietary producers received nutrition knowledge from books, newspapers, periodicals, magazines (78.7%) and television (53.2%). 81.4% of the meals producer themselves are picky eaters .Their children were pickier for food than other's children, there was significant difference between the two groups.The most of meals maker do not like the food animal offal. 52.8 percent of people rarely don't buy or product food that they don't like.The factors that impact meal pruducter buying and producting food from higher to lower were depuratory and quality (64.5%), the children's appetite (47.7%), nutrition (46.6 %), price (29.0%), themselves' appetite (25.7%), convenient of the purchase and production (21.3%).If children were picky eater, 66.5% of the parents would think of ways to rectify, 14.2% of the parents would forced children to eat food they didn't like, but there are also 15.1 % of the parents said no ways to this.If children lacked a certain mineral, 33.5 percent of the parents first choice add mentary elements from food to children, 41 percent woild also choice in this way if the lack of mentary elements were trivial, otherwise, they woild choice to provide mineral replenisher if their mineral were severe deficiency, in the absence of parents choosing the lesser supple mentary food, the lack of time to give heavier taking supplements, but 15.3 percent of parents directly supplement mineral elements replenisherto children in these circumstances.77.2 percent of parents have supplemented the mineral elements replenisher to their children.Conclusion:â‘ The zinc deficiency rate were comparative high and the rate of lead poisoning of children aged 3-6 in Lanzhou City were low.â‘¡Growth and development of conditions children aged 3-6 in Lanzhou City is better, malnutrition rate and growth retardation rate were lower, but a higher prevalence of anemia.â‘¢Iron shortage affects children's height, weight and hemoglobin content development,Elevated blood lead levels can lower hemoglobin concentration.â‘£Family meals producer's occupation, interest on the nutrition knowledge and academic career affect their the level of knowledge of nutrition.Their unhealthy dietary behaviors also affected children's eating habits.The parents should have a correct attitude and approach to take mineral elements replenisher for children. |
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