Effectiveness of School-Based Time-Restricted Eating for the Prevention and Control of Obesity in Children

Childhood obesity has become a major global public health challenge. Obesity can not only affects children's physical and mental health during childhood but may also persist into adulthood, significantly increasing the risk of cardiovascular disease. Therefore, effective prevention and control of childhood obesity can shift the prevention window forward and promote the prevention of cardiovascular disease. Recently, time-restricted eating (TRE) has gained attention in adult studies for its feasibility, as it involves "time control without calorie restriction," demonstrating weight loss effects comparable to energy restriction and higher feasibility. Here, the investigators designed a school-based cluster randomized controlled trial to investigate the effectiveness of 12-hour TRE in preventing and controlling childhood obesity. Schools were randomly assigned to either the intervention group or the control group, and participants were recruited from each school at the class level, ensuring that each group included at least 690 children. The control group received routine health education, while the intervention group received 12-hour TRE in addition to routine health education. After a 9-month intervention period (one academic year), the two groups will be compared in terms of weight management and childhood obesity prevalence.