Objective To explore the deficiency of people′s race elements of Hengyang district. Methods A total of 9 140 people coming to the First Affiliated Hospital for health examination from August 2017 to July 2018 were divided into six groups according to their age,such as infant group,young children group,preschool children group and school-age children group,juvenile group and adult group,whose content of calcium (Ca),copper (Cu),iron (Fe),magnesium (Mg),zinc (Zn) were detected respectively. Results The average levels of all groups were within th...