Prevalence of overweight and obesity in preschool children in Thessaloniki, Greece.

OBJECTIVE Data on obesity in preschoolers are scarce in Greece, a country particularly affected by the obesity epidemic. The present study aimed to assess overweight and obesity prevalence of preschoolers in Thessaloniki, Greece, by using three different standards for defining childhood overweight and obesity. DESIGN One thousand two hundred and fifty (1250) preschool children (657 boys and 593 girls) aged 2.0-6.0 years old from all public municipality kindergartens of Thessaloniki, Greece, participated in this cross-sectional survey conducted from 2009 to 2010.Body weight and height were measured and detailed anthropometry measurement was undertaken. BMI was classified to weight categories based on the CDC (US Centers for Disease Control and Prevention), IOTF (the International Obesity Task Force) and WHO (the World Health Organization) references. RESULTS Rates of excess body weight varied significantly according to the different international criteria: IOTF: overweight (including obesity) 21.2%, obesity 5.8%;CDC: overweight (including obesity) 30.5%, obesity 13.5%; and WHO: overweight (including obesity) 32.6%, obesity 5%. Boys and older children were particularly affected. CONCLUSIONS Overweight prevalence is high in Greek preschoolers and varies significantly according to the different criteria used, from 21.2% (IOTF reference) to 32.6% (CDC reference).