少量营养物质包含维生素、矿物质、微量元素等,为正常代谢所必需,口服饮食时,并不需额外补充。在癌症病人,因肿瘤代谢状态与它对宿主代谢的影响、抗肿瘤治疗的分解代谢以及伴有的其它生理应激状态如:手术、发热与感染等,影响了少量营养物质的需要量。虽然,人们已认识到维生素、矿物质与微量元素之营养重要性,但仍不知既能保存瘦肉总体(Lean body mass)而又不促进肿瘤生长的最适宜日需要量。已有的最适 A small amount of nutrients, including vitamins, minerals, trace elements, etc., necessary for normal metabolism, oral diet, without additional supplements. In cancer patients, the need for small amounts of nutrients is affected by the metabolic state of the tumor and its effect on host metabolism, the catabolism of anti-tumor therapy and other physiological stress states associated with it, such as surgery, fever and infection. Although the nutritional importance of vitamins, minerals and trace elements has been recognized, the optimal daily requirement for preserving Lean body mass without promoting tumor growth remains unknown. The most suitable