哈佛大学最新研究颠覆认知：低碳水饮食未必能减肥，错误选择或致体重反弹

Core Viewpoint - The latest research from Harvard University reveals that the effectiveness of low-carbohydrate diets (LCDs) for weight loss is highly dependent on food quality rather than merely reducing carbohydrate intake. This challenges the traditional belief that simply cutting carbs leads to weight loss [4][7][11]. Summary by Sections Research Findings - A large-scale study involving over 120,000 participants indicates that not all low-carb diets are effective for weight loss; the quality of the diet is crucial [4][5]. - Those following a high-quality low-carb diet, rich in plant proteins, healthy fats, and whole grains, showed significantly better weight maintenance compared to traditional low-carb dieters [5][7]. Dietary Recommendations - The study suggests prioritizing sources of high-quality plant proteins, unsaturated fats, and low-glycemic carbohydrates when adopting a low-carb diet, rather than simply reducing carbohydrate intake [8][11]. - The findings emphasize that blindly pursuing low-carb intake without considering food choices may lead to metabolic imbalances and increased obesity risk [7][11]. Individual Variability - The effectiveness of plant-based low-carb diets varies based on individual initial body weight, with the most significant benefits observed in overweight individuals (BMI 25-30) [9][10]. - The research highlights the need for personalized dietary management, taking into account individual metabolic conditions when selecting weight loss strategies [10][11]. Implications for Weight Management - This research provides a more scientific approach to weight management, suggesting that food quality should replace carbohydrate quantity as the new standard for healthy eating [8][11]. - The study's conclusions are expected to influence global dietary guidelines, promoting a shift towards more personalized and precise nutritional strategies [11].