Pediatric Nutrition

Trace elements status of overweight children and adolescents of the North region

The objective. To study zinc, chromium and iodine provision in children and adolescents who have different body weight and live in the North region. Patients and methods. The examination included 112 children and adolescents aged 5–17 years, who live in the Khanty-Mansi autonomous area: 44 with overweight and obesity and 68 – with normal body weight. In the hair of all examined children the concentrations of zinc (Zn), chromium (Cr) and iodine (I) were detected by the methods of atomic emission spectrometry with inductively coupled plasma and mass spectrometry (Centre for Biotic Medicine, Moscow). Results. In the both groups of children, the average values of Zn, Cr and I concentrations were within the range of physiologically permissive  values,  however,  considerable  intra-  and  inter-group  differences  were  observed.  A  significant  decrease  of  Zn (р <- 0.001), Cr (р <- 0.01) and I (р <- 0.05) concentrations in the hair of overweight and obese children and adolescents as compared with the group of children with normal body weight was found. In the group of overweight and obese children and adolescents deficiencies of these trace elements were found significantly more often. Conclusion. Along with rationalization of dietary habits and behavioural factors, zinc, chromium and iodine deficiencies should be corrected for prevention and treatment of obesity and overweight in children and adolescents after detection of concentrations of these chemical elements in biosubstates.