Trends in adolescent overweight prevalence in Italy according to socioeconomic position.

BACKGROUND: The aim of this research is to update the trend in overweight (including obesity) prevalence among Italian adolescents, evaluating possible differences by age and gender, and analyzing their relationships with socioeconomic status, between 2002 and 2014.

METHODS: The present study is based on data from the Italian HBSC study at four time points (2002, 2006, 2010 and 2014), which involved 15 035 adolescents, aged 11-13-15 (7540 boys and 7495 girls).

RESULTS: Gender and age were associated with the occurrence of overweight. In all surveys, boys had a higher prevalence of excess weight compared to girls (p < 0.001), but only among girls there was a significant increasing trend (from 11.2% in 2002 to 13.3% in 2014). From 2002 to 2014, the risk of being overweight was inversely associated with the economic level of the family, for both genders and all age groups.

CONCLUSIONS: Data collected between 2002 and 2014 in Italy showed a low overall increase in prevalence of obesity and overweight and an inverse association between SES and obesity in all age groups and in both genders. These findings suggest that concerted, multi-sectorial, efforts are needed in Italy, in combination with a sound political will, focused on reducing social inequality associate.