Objective: To identify the socioeconomic factors associated with being overweight, the risk of depression, or dental caries among adolescents. Method: In 2005, a representative sample (n=960) of middle and high school students in Val-de-Marne was selected. Anthropometric and oral health examinations were conducted, and participants completed a self-administered questionnaire. Overweight and obesity are defined here according to international Body Mass Index thresholds; dental caries according to the CAO index (Caries, Absent, or Obturated); and the risk of depression according to the ADRS (Adolescent Depression Rating Scale). Results: 17.0% of adolescents were overweight (including 3.1% who were obese), 43.6% had dental caries, and 18.3% were at risk for depression. The risk of being overweight increased if the mother did not have a high school diploma (ORa = 1.6), if the parents were originally from the Maghreb (ORa = 1.8), from an “other” country (outside Europe and the African continent) (ORa = 1.8), or if they lived in a public housing neighborhood (ORa = 2.1). The risk of tooth decay increased with age and if the parents were unemployed (ORa = 2.7) or were from the Maghreb (ORa = 2.0). The risk of depression was high among adolescents who felt that “in our family, we have trouble buying food” (ORa=3.7) and those who felt unsafe in their neighborhood (ORa=1.5). Conclusion: The risks of being overweight and having dental caries were, in this study, more frequently associated with the mother’s educational level and the father’s country of origin than with the parents’ occupation. Difficult living conditions increased the risk of depression. (R.A.)