Zhu Y, et al. - In this cross-sectional study, researchers assessed the iron metabolic status of children with different body mass index (BMI) and studied the relationship between iron metabolism and dyslipidaemia risk. The study sample consisted of 1866 children and adolescents (aged 7–18). The prevalence of dyslipidaemia and iron deficiency in children and adolescents increased according to BMI categories and in obesity subjects was 58.3 and 8.9%. A downward trend in serum iron (SF) level by BMI categories and the highest ferritin level in obesity subjects indicated that iron storage was related to BMI in children and adolescents. In addition, there was an inverse relationship between transferrin and soluble transferrin receptor (sTfR) concentrations and dyslipidaemia risk in children with different BMI.