Core Viewpoint - The 2025 National Nutrition Week in China emphasizes the theme "Balanced Eating and Exercise for Healthy Weight: A National Action" highlighting the importance of maintaining a healthy weight through proper diet and regular exercise [1] Group 1: Obesity Trends - Obesity rates increase starting from the age group of 24 to 29, peaking in middle-aged men (ages 55 to 59) and elderly women (ages 65 to 69) [1] - The overall prevalence of overweight and obesity varies across different age groups, indicating a significant age-related trend [1] Group 2: Factors Contributing to Weight Gain - Multiple factors contribute to weight gain in middle age, including increased energy intake, reduced physical activity, muscle loss, and decreased metabolic rate [1] - A decline in metabolic rate means that the same amount of food consumed leads to more energy being stored in the body [1] Group 3: Dietary Recommendations - Maintaining a healthy weight primarily relies on diet, with excessive fat intake increasing the risk of various diseases and leading to obesity [1] - Healthy weight loss should focus on reducing fat rather than losing bone, muscle, or body water [1] Group 4: Exercise Recommendations - Experts recommend developing long-term healthy eating habits, reducing high-fat and high-sugar foods, and minimizing the consumption of sugary drinks and fried foods [2] - It is advised to engage in daily exercise or at least three sessions of 30 minutes of exercise per week to increase muscle mass and enhance energy metabolism [2]

我国学龄前儿童体脂率最高的地区为黑龙江省、辽宁省和新疆维吾尔自治区；体脂率最低的地区为海南 省、广东省和广西壮族自治区。 在中国，儿童青少年肥胖率攀升已成为一个日渐严峻的公共卫生问题。国家卫健委在《体重管理指导原 则（2024年版）》中曾提出警示：如果得不到有效遏制，2030年我国儿童超重肥胖率将达到31.8%。 在前述研究中，研究人员基于2020年第五次国民体质监测数据，分析了全国31个省3~6岁幼儿体脂率地 理空间的分布特征、聚集趋势及其影响因素。 研究结果显示，在中国学龄前儿童中，女孩较男孩整体肥胖风险更高。具体来说，我国学龄前儿童的平 均体脂率为20.7％，其中女孩的体脂率（ 22.1± 5.0）%显著高于男孩（ 19.2± 5.4）%。 相较于此前研究，该研究团队发现，尽管脂肪堆积反弹（AR）通常发生在6~8岁之间，标志着体重指数 的第二次上升，但在被研究的3~6岁儿童队列并未出现这一现象，学龄前儿童体脂率和年龄增长无显著 的正相关关系。 但男性体脂率较低这一趋势在学龄前儿童中持续存在。对此，研究团队归因于"可能是男孩参与体育活 动的水平较高"。 性别差异外，研究团队发现，学龄前儿童体脂率存在居住地 ...