Adolescent Nutritional Patterns and Health Behaviors: A Cross-Sectional Analysis

Background/Objectives: Adolescence is a pivotal stage marked by physiological and behavioral shifts that shape dietary habits and health outcomes. Methods: This cross-sectional study analyzed 662 questionnaire responses to explore associations between socio-demographic variables, dietary behaviors, and health practices among school-aged children and adolescents. Results: The analysis reveals significant gender differences in body mass index (BMI), weight-loss behaviors, and family structure. Female adolescents were more likely to be underweight (18.27%) compared to male adolescents (10.82%), while overweight prevalence was higher among male adolescents (18.66%) than female adolescents (11.68%) (χ² = 11.457, p = 0.009). Dietary patterns varied significantly across age groups, with high school-aged children demonstrating lower vegetable consumption and increased autonomy over food choices. Primary school children exhibited higher intake of carbonated beverages (OR = 0.185, p = 0.002 for high school; OR = 0.116, p < 0.001 for middle school), whereas teenagers showed a preference for structured meals and lower fast-food intake. Meat consumption frequency correlated with greater diversity in protein sources (χ² = 48.77, p < 0.001), while chaotic eating behaviors were more prevalent among middle and high school-aged children (OR = 2.291, p = 0.032 for middle school; OR = 2.225, p = 0.030 for high school). Hydration habits played an essential role in dietary quality, with school-age children consuming ≥3 liters of water daily exhibiting healthier eating patterns (OR = 7.146, p = 0.001). Additionally, psychological factors such as fatigue and stress were significantly associated with unhealthy dietary choice. Conclusions: These findings highlight the need for targeted nutritional education, school-based interventions, and family-focused strategies to improve adolescent health behaviors.