全球肥胖问题加剧，农村人口成新主力！《自然》深度报道：乡村居民胖得令人震惊

Core Insights - The article challenges the prevailing notion that urban residents are more prone to obesity than rural residents, revealing that rural populations have experienced a faster increase in BMI over the past three decades [7][18]. Summary by Sections Urban vs. Rural Obesity - Obesity has been labeled as an "urban disease," attributed to easy access to high-calorie processed foods and a sedentary lifestyle in cities [7]. - A recent study published in Nature analyzed BMI trends from 1985 to 2017 across over 112 million adults in 200 countries, indicating a significant shift in understanding obesity risk [8][12]. BMI Trends - The average BMI for women globally increased from 22.6 to 24.7, while for men it rose from 22.2 to 24.4, translating to an average weight gain of 5 to 6 kg per person [12]. - Notably, rural populations have seen a BMI increase of 2.1 kg/m², compared to urban increases of 1.3 kg/m² for women and 1.6 kg/m² for men [15][16]. Factors Contributing to Rural Obesity - The study highlights that rural areas have become the primary drivers of global BMI increases, contributing over 50% of the global rise, with this figure reaching 80% in low- and middle-income countries [16][20]. - In China, rural men's BMI surged from 20.9 to 23.9, making it one of the fastest-growing obesity rates globally [18]. Misconceptions about Rural Life - Factors leading to increased weight in rural populations include lower income and education levels, limited access to fresh foods, and a lack of recreational facilities [20]. - The "urbanization" of rural lifestyles, characterized by improved food supply and increased consumption of ultra-processed foods, is also a significant factor [20]. Policy Implications - The findings suggest a need for countries to prioritize intervention strategies targeting rural populations, which have been overlooked in obesity research and policy-making [21].