生酮饮食指高脂肪、极低碳水化合物的饮食,通常碳水化合物供能比为2%~15%,脂肪供能比为60%~90%,以脂肪取代葡萄糖供能。经典生酮饮食包括:中式改良阿特金斯饮食、MCT生酮饮食、低血糖生成指数生酮饮食。研究表明,正常神经细胞比脑胶质瘤细胞更易耐受低糖环境。因为在低糖时,肿瘤细胞无法使用酮体作为能量,而正常细胞却可以。限制热量是指降低饮食能量摄入,且没有营养不良,不限制维生素和矿物质,分为:(1)慢性限制热量:持 Ketogenic diet refers to a high fat, very low carbohydrate diet, carbohydrate to energy ratio is usually 2% to 15%, fat to energy ratio of 60% to 90%, with fat instead of glucose for energy. Classic ketogenic diet include: Chinese modified Atkins diet, MCT ketogenic diet, hypoglycemic index ketogenic diet. Studies have shown that normal neural cells are more resistant to low-sugar conditions than glioma cells. Because in low sugar, the tumor cells can not use ketone body as energy, but normal cells can. Limiting calories means lowering dietary energy intake without malnutrition and without limiting vitamins and minerals, divided into: (1) Chronic calorie restriction: