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 recent study 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, challenging traditional beliefs about dieting [5][7][12]. Summary by Sections Low-Carbohydrate Diets and Weight Loss - Traditional views suggest that strict carbohydrate control leads to effective weight loss, but the new research indicates that not all low-carb diets are beneficial; the quality of food consumed is crucial [5][7]. - A large-scale study involving over 12,000 participants shows that diets high in animal protein and refined fats yield limited weight loss and may even cause weight rebound [5][8]. Food Quality vs. Quantity - The study emphasizes that the quality of macronutrients is more important than simply counting carbohydrates; diets rich in plant proteins, healthy fats, and whole grains are more effective for weight maintenance [7][8][12]. - Those who prefer red meat and processed foods within low-carb diets experienced greater weight gain compared to those on a standard diet, highlighting the importance of food choices [5][8]. Personalized Nutrition - The effectiveness of plant-based low-carb diets varies based on individual body mass index (BMI), with overweight individuals (BMI 25-30) benefiting the most from such diets [10][12]. - The research suggests that personalized dietary plans should consider individual metabolic conditions, as the same diet may not work for everyone [10][12]. Implications for Weight Management - The findings provide a new perspective on weight management, advocating for a focus on high-quality nutrients rather than just reducing carbohydrate intake [12]. - This research is expected to influence global dietary guidelines, promoting a shift towards more personalized and scientifically-backed nutritional strategies [12][13].