Core Insights - The rising obesity rate among preschool children in China has become a significant public health issue, with projections indicating that by 2030, the overweight and obesity rate could reach 31.8% if not effectively addressed [1] - The average body fat percentage (BF%) among preschool children in China is 20.7%, with girls having a higher average (22.1%) compared to boys (19.2%) [3][4] - There are notable geographical and gender disparities in body fat percentage among preschool children, with urban children showing higher rates than rural counterparts [4][5] Group 1: Obesity Trends and Projections - The National Health Commission warns that without intervention, the obesity rate among children could reach 31.8% by 2030 [1] - The prevalence of overweight and obesity among preschool children has surpassed 10%, currently at 10.4% [1] Group 2: Body Fat Percentage Insights - Body fat percentage is a more accurate measure of obesity compared to BMI, particularly in predicting cardiovascular and metabolic risks [3] - The study found that there is no significant positive correlation between age and body fat percentage in the 3-6 age group [3] Group 3: Geographical Disparities - The highest body fat rates among preschool children are found in Heilongjiang (23.3%), Liaoning (23.0%), and Xinjiang (22.5%), while the lowest are in Hainan (18.4%), Guangdong (18.4%), and Guangxi (17.9%) [5] - A geographical pattern shows higher body fat rates in northern regions compared to southern regions, with significant differences observed along the Qinling-Huaihe line [4][5] Group 4: Environmental and Social Factors - Environmental factors, such as temperature and urban living conditions, contribute to the observed geographical differences in body fat percentage [5] - The study emphasizes the importance of recognizing the complex interplay of social and environmental factors in determining body fat levels among preschool children [5]