Stabilization of Overweight and Obesity in Slovenian Adolescents and Increased Risk in Those Entering Non-Grammar Secondary Schools

Background/Aim: To estimate overweight and obesity prevalence trends in Slovenian adolescents entering secondary schools in the years 2004, 2009 and 2014 and differences in the prevalence between different types of secondary schools. Methods: Data from 17,538 adolescents entering secondary schools (mean age ± standard deviation 15.4 ± 0.5 years) collected during obligatory medical examination in years 2004, 2009 and 2014 was analyzed. Overweight and obesity were defined using International Obesity Task Force criteria. Results: In 2004-2009 overweight and obesity prevalence increased, especially in males and stabilized thereafter (2009-2014) in both genders. It was significantly higher (p < 0.0001) in those attending secondary vocational and technical/professional versus grammar schools (2009; 28.7 vs. 16.8% overweight females and 31.6 vs. 22.3% overweight males; 2014: 29.7 vs. 17.9% overweight females and 33.6 vs. 20.4% overweight males). Conclusions: Overweight and obesity prevalence in Slovenian adolescents entering secondary schools stabilized recently. Adolescents attending secondary vocational and technical/professional schools are at an increased risk of overweight and obesity.