Abstract：Objective To study the effect of dietary nutrient intake on the contents of trace elements in hair of preschoolers aged 3-6 years in Nanning City, and to provide a basis for evaluating the preschoolers’ nutritional status and guiding their reasonable dietary. Methods A nutritional survey was conducted among 201 preschoolers aged 3-6 years in three kindergartens in Nanning City in December, 2016, and the contents of hair copper, zinc, iron, calcium and magnesium in the preschoolers were determined. Results The average contents of hair copper, iron, calcium, magnesium and zinc in the preschoolers were (19.48±7.80) μg/g, (28.04±15.36) μg/g, (419.18±175.48) μg/g, (33.48±18.52) μg/g and (151.12±57.10) μg/g respectively. Statistically significant differences were found in the contents of hair copper, iron, calcium, magnesium and zinc between male and female preschoolers (P<0.05) as well as in the content of copper among preschoolers of different ages(P<0.05). The protein, carbohydrate, thiamine, niacin, vitamin E, phosphorus, magnesium, iron, zinc and manganese in dietary were positively correlated with the content of hair copper (P<0.05). Carotene and manganese were positively correlated with the content of hair magnesium (P<0.05), while fat was negatively correlated with it (P<0.05). Energy, protein, carbohydrate, carotene, niacin, vitamin E, magnesium, iron, zinc and manganese were positively correlated with the content of hair zinc (P<0.05), while fat and vitamin C were negatively correlated with the content of hair calcium (P<0.05). Conclusions There is a correlation between dietary nutrient intake and hair trace elements in the preschoolers aged 3-6 years. Hair trace elements copper and zinc are susceptible to various dietary nutrients.
2018, Vol. 25 
