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The study aims to explore the effect of socio-economic status (SES) on energy balance behaviours and adherence to the Mediterranean diet (MD), in Greek adolescents.

391 students, 14-16 years old, have been recruited from two public high schools located in low SES areas of Athens and two private high schools from higher SES areas. Students completed a specifically designed energy balance behaviours questionnaire together with the Physical Activity Questionnaire for Adolescents and the KIDMED index.

Adolescents of low SES reported lower adherence to the MD (p<0.05), higher consumption of soft drinks (p<0.001), lower breakfast consumption (p<0.001), fewer meals per day consumed with parents (p<0.05), lower physical activity levels (p<0.01) and more TV viewing hours (p<0.01) compared to adolescents of higher SES.

Family annual income, an indicator of family SES, has not been recorded, since this was considered a sensitive and difficult information to be obtained by the adolescents.

This study was conducted during a period of Greek economic recession and was designed to investigate the effect of lower SES on diet quality and unhealthy behaviours in the youth. Understanding and limiting possible health inequalities in Greece, due to the economic crisis, is of paramount importance.