Iron Deficiency On The Students' Cognitive Abilities

BackgroundAs china's reform opening up and rapid economic development,population mobility isincreasing. As by the end of June 2007, The Ministry of Public Security, and other relevant departments investigate: Beijing's total population of over 17,000,000 people. Among them, Beijing household registration of the population has reached 12,040,000, the number of floating population breakthrough 5,100,000, accounting for about one-third of the total population.Migrant children's education is widespread concern in society, they are also the health status of the same by the relevant departments. In November 2002 to December,women and children, the State Council Work Committee Office, UNICEF and the China Children's Center in Kowloon City, the country had a floating population of children of a sample survey. The results showed that: Floating population of high child mortality rate, high incidence of diseases, poor nutrition, lack of health knowledge. Investigation of the floating population of children within 1 week of the main food intake in 2000 and 14 cities in the province of children within 1 week diet shows that their milk, meat, fish and shrimp, eggs, fruits and vegetables daily consumption of the situation Lower than those in urban resident children, migrant children leading to anemia, rickets, malnutrition, stunted growth, and other nutritional disorders were significantly higher than urban children.The quality of the population in the form of three elements (genetic, nutrition and education), the nutritional status of the person's intellectual development and the potential constraints of a very significant role. Dietary intake of nutrients and long-term shortage not only affects the body's physical development, but will also affect cognitive development, especially iron deficiency. Iron deficiency can cause a range of functions of the central nervous system disorders, including emotional, physical and cognitive, and other aspects. cognitive including attention, memory, learning ability, and so on. Iron deficiency can lead to cognitive and learning ability decreased, especially in math dropped. And the more severe iron deficiency, cognitive and mathematical results will be lower.In order to enhance the relevant government departments and social groups on the movement of the population, especially the health of their children, we need a better understanding of urban school students work in the nutritional status, through the system of cognitive tests to explore varying degrees of iron deficiency and iron deficiency on the Juvenile cognitive constraints of the role.Objective Understanding of the Beijing Daxing District Pu gongying middle Schoo students nutritional and health status of the investigation and the academic ability of students to understand and explore varying degrees of iron deficiency and iron deficiency on cognitive and academic performance of students. And put forward scientific and reasonable intervention, the collective arrangements for the school meals to help.MethodCross-sectional survey methodology used in June 2007 and October respectively, the students carried out a nutrition survey, including physical examination (height, weight), biological and chemical detection laboratory (hemoglobin, hematocrit, serum iron, serum ferritin, serum transferrin Receptor, serum zinc and serum vitamin A, thiamine in the urine, riboflavin), Dietary surveys (selected Pu gongying middle schools in September 2007 the food consumption records of students,calculated dietary nutrient intake, nutritional status of its evaluation, impact analysis. and sampling method used for three consecutive days, the students measured in actual food intake of nutrients), Survey (including ethnic, family income, parents of students age, educational level, occupation), "Toni2 test of nonverbal intelligence " and "the basic cognitive tests," student survey on Chinese, mathematics, English, Moral Character,geography and history test scores in June 2007 at the end. of semester.Results1. Nutritional status of the students in Beijing Pu Gongying middle school1.1 Inadequate intake of nutrients: dietary more than 90% RNI/AI of vitamin C, magnesium and potassium. Achieve RNI 80-90 % of energy and protein. Inadequate intake of vitamin A, vitamin B₁, vitamin B₂, calcium, iron, zinc and selenium. In particular, calcium, zinc and iron only RNI/AI of 32.0 %, 63.7 % and 64.9 %.A lack of vitamin rate of 7.0 %, a lack of vitamin B₁ was 7.4 %, a lack of vitamin B₂ rate of 8.7 %, 34.8 % of students in lower than normal levels of serum zinc. iron deficiency is more serious, and anemic rate of 11.3 %.1.2 Growth and development of poor students: All age groups of boys and girls average height and weight are lower than overall level of Beijing and Daxing District. Student's malnutrition rate as high as 30.3 %.2. Iron deficiency and iron deficiency in varying degrees of students affect on academic performance and cognitive ability.Through cognitive tests, the results showed that: Iron deficiency students opposed to normal students, poor cognitive ability. In accordance with anemia or not, the students further into marginal iron deficiency and serious iron deficiency. Severe iron deficiency usually refers to the iron deficiency anemia (IDA), and Marginal iron deficiency usually refers to the non-iron-deficiency anemia (ID). In attention, memory, intelligence, the lowest average score is IDA students, followed by ID students, the highest scores are the normal students. That the more severe iron deficiency, the more low cognitive ability. After social adjustment of demographic data, such as confounding factors, iron deficiency students relative normal students in memory, mental and cognitive scores have a higher failure risk.The test scores of students, including Chiese, mathematics, English and Moral Character. Among Chiese and mathematics iron deficiency students are worse than the normal students, and the difference was statistically significant. The students further divided into iron deficiency anemia(IDA) and non-iron-deficiency anemia(ID), the lowest average score is IDA students, followed by ID students, the highest scores are the normal students. That the more severe iron deficiency, the more low average score. After social adjustment of demographic data, such as confounding factors, iron deficiency students relative normal students in Chiese and mathematics have a higher failure risk.ConclusionsCity school students to work in malnutrition, anemia, a lack of nutrients (including iron deficiency, zinc deficiency, a lack of vitamin A, a lack of vitamin B₁, vitamin B₂ lack of rate) was significantly higher than local students of the same age.Long-term lack of nutrients, especially iron deficiency,iron deficiency in the body so that the state of cognitive,including attention, memory, intelligence and academic performance is poor, and the more severe iron deficiency, cognitive and academic performance will be lower.