Core Viewpoint - The article emphasizes the importance of weight management as part of the "Healthy China 2030" strategy, highlighting that maintaining stable body weight is linked to longevity and overall health [2][28]. Group 1: Research Findings - A study published in the Journal of Gerontology indicates that women who maintain stable body weight are more likely to live to 90 years or older [7][9]. - The research included 54,437 women aged 61 to 81, measuring their weight at baseline, 3 years, and 10 years [8]. - Among the participants, 30,647 women (56%) lived to at least 90 years, with those maintaining stable weight having a 1.2 to 2 times higher chance of longevity compared to those who lost 5% or more of their weight [9]. Group 2: Weight Management Guidelines - The National Health Commission has initiated a three-year action plan for weight management, aiming to enhance public awareness and skills related to weight management by 2026, with a target of reducing the annual obesity rate increase by 10% [28][30]. - The article outlines that a balanced diet and increased physical activity are fundamental for effective weight loss, recommending a gradual weight reduction of 5% to 10% over six months [15][20]. - Specific dietary recommendations include prioritizing whole grains, lean proteins, low-fat dairy, and a variety of fresh fruits and vegetables while controlling total caloric intake [18][20].

Core Viewpoint - Maintaining stable body weight is associated with increased longevity, particularly among older women, as evidenced by a study published in the "Journal of Gerontology" which indicates that those who keep their weight stable have a higher likelihood of living to 90 years or older [7]. Group 1: Importance of Weight Stability - A study involving 54,437 women aged 61 to 81 found that 56% lived to at least 90 years old, with those maintaining stable weight having a 1.2 to 2 times higher chance of longevity compared to those who lost 5% or more of their body weight [7]. - Weight gain of 5% or more showed no significant correlation with longevity [7]. Group 2: Understanding Obesity - Obesity is influenced by various factors including genetics, diet, physical activity, lifestyle, and social environment [9]. - Body Mass Index (BMI) is a common tool for assessing weight status, with healthy adults having a BMI between 18.5 and 24, overweight classified as 24 to 28, and obesity at 28 or above [9]. Group 3: Weight Management Strategies - Effective weight loss strategies should focus on dietary control and increased physical activity, with a recommended gradual weight loss of 5% to 10% over six months [11]. - The National Health Commission has released guidelines for healthy eating to support weight management, emphasizing the importance of balanced nutrition [11][12]. Group 4: Dietary Recommendations - Suggested dietary practices include prioritizing whole grains, lean proteins, low-fat dairy, and a variety of fresh fruits and vegetables while controlling sugar and starch intake [14]. - Daily caloric intake should be adjusted based on individual needs, with recommendations for men to consume 1,200 to 1,500 kcal and women 1,000 to 1,200 kcal [15].