OverweightObesityBody Mass IndexThinnessWeight LossBody WeightPrevalenceCross-Sectional StudiesRisk FactorsPediatric ObesityDiet, ReducingExerciseBody ImageAnthropometryWeight GainLife StyleDietEnergy IntakeFeeding BehaviorWaist CircumferenceBody HeightBody CompositionSex FactorsQuestionnairesSocioeconomic Factors