Objective To determine the prevalence of overweight and obesity in children and adolescents aged 7-15 years in Longquanyi District of Chengdu and its association with consumptions of meat, dietary fat and fatty-acids. Methods A total of 1 811 children and adolescents aged 7-15 years in Longquanyi District were selected using stratified cluster sampling strategy. Their body mass, height and waist circumference were measured. The prevalence of overweight/obesity was estimated based on body mass index (BMI), body mass index standard deviation score (BMI SDS), and waist-to-height ratio (WHtR). Daily consumptions of meat, dietary fat and fatty-acids were calculated using data collected through a food frequency questionnaire and 3-d 24 h dietary recall. The children with overweight/obesity were compared with those with normal body mass in food/nutrient consumptions using Wilcoxon tests. The BMI SDS, WHtR, and prevalence of overweight and obesity were also compared between those having low, moderate and high food/nutrient consumptions using Chi-square tests or Kruskal-Wallis tests. Results About 10.34% and 6.59% of participants were found to be overweight and obese, respectively. Boys had higher prevalence of overweight (12.05%) and overweight/obesity (18.97%) than girls (8.55%, 14.80%) ( P P P P P
