The aim of the present study is to identify risk factors for childhood obesity through long-term longitudinal follow-up. conditions: Child Obesity studyType: OBSERVATIONAL observationalModel: COHORT timePerspective: PROSPECTIVE count: 1508 type: ACTUAL measure: Assessment of dietary intake and habits measure: Assessment of physical activity, sedentary behavior and sleep pattern measure: Early risk factors measure: Body composition: Height measure: Body composition: Weight measure: Body composition: Body mass index measure: Body composition: Waist circumference measure: Psychosocial and neuropsychological behavioral assessment measure: Verbal fluency measure: Muscular strength measure: Cardiorespiratory endurance measure: Association between genetic polymorphisms, metabolomic and metagenomic profiles with the development of obesity. measure: Body composition: Waist height measure: Body composition: Fat mass measure: Body composition: Fat mass index measure: Body composition: Fat-free mass measure: Body composition: Total body water measure: Systolic blood pressure measurement measure: Diastolic blood pressure measurement measure: Heart rate measurement measure: Hematological analysis: Hemoglobine measure: Hematological analysis: Hematocrite measure: Hematological analysis: Erythrocytes measure: Hematological analysis: Mean corpuscular volume measure: Hematological analysis: Mean corpuscular hemoglobin measure: Hematological analysis: Mean corpuscular hemoglobin concentration measure: Hematological analysis: Red cell blood distribution width measure: Hematological analysis: White blood cells measure: Hematological analysis: Neutrophils measure: Hematological analysis: Lymphocytes measure: Hematological analysis: Monocytes measure: Hematological analysis: Eosinophils measure: Hematological analysis: Basophiles measure: Hematological analysis: Platelets measure: Hematological analysis: Mean platelet volume measure: Biochemical analysis: Glucose measure: Biochemical analysis: Bilirubin measure: Biochemical analysis: Creatinine measure: Biochemical analysis: Urate measure: Biochemical analysis: Urea measure: Biochemical analysis: Total protein measure: Biochemical analysis: Aspartate aminotransferase measure: Biochemical analysis: Alanine aminotransferase measure: Biochemical analysis: Gamma-glutamyl transferase measure: Biochemical analysis: Alkaline phosphatase measure: Biochemical analysis: Total cholesterol measure: Biochemical analysis: High density lipoproteins measure: Biochemical analysis: Non-HDL cholesterol measure: Biochemical analysis: Low density lipoproteins measure: Biochemical analysis: Apolipoprotein A1 measure: Biochemical analysis: Apolipoprotein B measure: Biochemical analysis: Calcium measure: Biochemical analysis: Potassium measure: Biochemical analysis: Sodium measure: Biochemical analysis: Phosphorus measure: Biochemical analysis: Iron measure: Biochemical analysis: Magnesium measure: Biochemical analysis: Zinc measure: Biochemical analysis: Insulin measure: Biochemical analysis: Insulin resistance measure: Biochemical analysis: C-reactive protein measure: Biochemical analysis: Tumor necrosis factor alpha measure: Biochemical analysis: Adiponectin measure: Biochemical analysis: Energy measure: Biochemical analysis: Carbohydrates measure: Biochemical analysis: Sugars measure: Biochemical analysis: Fiber measure: Biochemical analysis: Polysaccharides measure: Biochemical analysis: Total fat measure: Biochemical analysis: Saturated fatty acids measure: Biochemical analysis: Monounsaturated fatty acids measure: Biochemical analysis: Polyunsaturated fatty acids measure: Biochemical analysis: Vitamin B1 measure: Biochemical analysis: Vitamin B2 measure: Biochemical analysis: Vitamin B3 measure: Biochemical analysis: Vitamin B6 measure: Biochemical analysis: Vitamin B9 measure: Biochemical analysis: Vitamin B12 measure: Biochemical analysis: Vitamin C measure: Biochemical analysis: Vitamin A measure: Biochemical analysis: Vitamin D measure: Biochemical analysis: Vitamin E measure: Biochemical analysis: Carotenes measure: Biochemical analysis: Retinol measure: Biochemical analysis: Water sex: ALL minimumAge: 3 Years maximumAge: 6 Years stdAges: CHILD facility: University of Santiago de Compostela city: Santiago De Compostela state: La Coruña zip: 15782 country: Spain lat: 42.88052 lon: -8.54569 facility: University of Navarra city: Pamplona state: Navarra zip: 31009 country: Spain lat: 42.81687 lon: -1.64323 facility: Institut Hospital del Mar d'Investigacions Mèdiques city: Barcelona zip: 08003 country: Spain lat: 41.38879 lon: 2.15899 facility: University of Cordoba city: Córdoba zip: 14071 country: Spain lat: 37.89155 lon: -4.77275 facility: Rovira i Virgili University city: Tarragona zip: 43002 country: Spain lat: 41.11667 lon: 1.25 facility: University of Valencia city: Valencia zip: 46010 country: Spain lat: 39.46975 lon: -0.37739 facility: University of Zaragoza city: Zaragoza zip: 50018 country: Spain lat: 41.65606 lon: -0.87734 hasResults: False