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Abstract Objective: To assess the association between abdominal obesity, food intake, sleep deprivation, and screen time in adolescents. Methods: This cross-sectional study was conducted with 432 adolescents aged 14–19 years, from public and private schools. Anthropometric and body composition measures included body weight, waist circumference, body mass index for age, waist-to-hip ratio, waist-to-height ratio, and body fat percentage. Abdominal obesity was defined by age and sex specific cut-off points for waist circumference. Food intake, screen time, sexual maturation, and sleep duration were evaluated by self-administered questionnaires. Results: The prevalence of excess body weight and abdominal obesity was 16.7% and 27.5%, respectively. Students in the adult phase (post-puberty), with inadequate waist-to-height ratio, high body fat percentage, and screen time ≥ 3 h/day were, respectively, 2.5 (95% CI 1.40–4.46), 7.44 (95% CI 1.08-51.46), 2.79 (95% CI 1.04-7.50), and 1.43 (95% CI 1.24-3.89) more likely to have abdominal obesity. Low intake of unprocessed or minimally processed foods was associated with inadequate sleep duration, while high intake of ultra-processed foods was associated with high screen time. Conclusions: Abdominal obesity was associated with the adult phase, short sleep duration and high screen time. The degree of food processing was associated with screen time and sleep duration. Assessing the risk factors of abdominal obesity may be a useful strategy for preventing cardiovascular disease in adolescents. Objective deprivation Methods crosssectional cross sectional 43 1419 14 19 14–1 years schools circumference waisttohip hip ratio waisttoheight height percentage cutoff cut off maturation selfadministered self administered questionnaires Results 167 16 7 16.7 275 27 5 27.5% respectively postpuberty, postpuberty post puberty , (post-puberty) hday h day 25 2 2. 95% 95 (95 1.40–4.46, 140446 1.40–4.46 1 40 4 46 1.40–4.46) 744 44 7.4 1.0851.46, 1085146 1.08 51.46 08 51 1.08-51.46) 279 79 2.7 1.047.50, 104750 1.04 7.50 04 50 1.04-7.50) 143 1.4 1.243.89 124389 1.24 3.89 24 89 1.24-3.89 ultraprocessed ultra Conclusions 141 14– 16. 27.5 (post-puberty 9 (9 14044 1.40–4.4 74 7. 0851 1.0851.46 108514 108 1.0 5146 51.4 0 1.08-51.46 047 1.047.50 10475 104 750 7.5 1.04-7.50 1. 243 1.243.8 12438 124 1.2 389 3.8 8 1.24-3.8 27. ( 1404 1.40–4. 085 1.0851.4 10851 10 514 51. 1.08-51.4 1.047.5 1047 75 1.04-7.5 1.243. 1243 12 38 3. 1.24-3. 140 1.40–4 1.0851. 1085 1.08-51. 1.047. 1.04-7. 1.243 1.24-3 1.40– 1.0851 1.08-51 1.047 1.04-7 1.24- 1.40 1.085 1.08-5 1.04- 1.08-