11 RDA—膳食营养供给量 ⚫ Concept: The most appropriate nutritional intake, based on nutritional requirement, referring to dietary habits, food digestibility, nutrients losing during cooking , and other various affecting factors; meanwhile, considering to social condition, financial condition, social food product and so on. (More than nutritional requirement, except heat energy) ⚫ 在营养生理需要基础上,参照饮食习惯,食物的消化率,烹调损失,以 及各种因素对营养素的影响,并兼顾社会条件,经济条件,社会食物 生产等情况而确立的最适宜数量.一般高于生理需要,但热能不宜再 高
11 RDA—膳食营养供给量 ⚫ Concept: The most appropriate nutritional intake, based on nutritional requirement, referring to dietary habits, food digestibility, nutrients losing during cooking , and other various affecting factors; meanwhile, considering to social condition, financial condition, social food product and so on. (More than nutritional requirement, except heat energy) ⚫ 在营养生理需要基础上,参照饮食习惯,食物的消化率,烹调损失,以 及各种因素对营养素的影响,并兼顾社会条件,经济条件,社会食物 生产等情况而确立的最适宜数量.一般高于生理需要,但热能不宜再 高
12 Basic Principle for RDA ⚫ 1.The intake of heat energy and nutrients equals to ⚫ nutritional requirement. (to get to nutritional ⚫ requirement) ⚫ 2. to keep nutritional balance: among nutrients, ⚫ between various nutrients and heat energy ⚫ 3.Considering to physical safety, special human ⚫ appropriate intake (x ±2s) ⚫ 1.保证人体从膳食中获得的热能和营养素达到 ⚫ 生理需要量; ⚫ 2.在各营养素之间,营养素与热能之间保持平衡; ⚫ 3.以膳食为基础,考虑到生理安全性,特定人群的 ⚫ 适宜摄取量
12 Basic Principle for RDA ⚫ 1.The intake of heat energy and nutrients equals to ⚫ nutritional requirement. (to get to nutritional ⚫ requirement) ⚫ 2. to keep nutritional balance: among nutrients, ⚫ between various nutrients and heat energy ⚫ 3.Considering to physical safety, special human ⚫ appropriate intake (x ±2s) ⚫ 1.保证人体从膳食中获得的热能和营养素达到 ⚫ 生理需要量; ⚫ 2.在各营养素之间,营养素与热能之间保持平衡; ⚫ 3.以膳食为基础,考虑到生理安全性,特定人群的 ⚫ 适宜摄取量
13 Characteristic of RDA ⚫ To be applicable to healthy people ⚫ Based on dietary ⚫ Recommendation, not a standard ⚫ Authority ⚫ To be involved in various nutrients. ⚫ 1.对象带有宏观性, 所有健康人, 普通人适用; ⚫ 2.以膳食为基础; ⚫ 3.是一个推荐值,不是标准; ⚫ 4.具有相当高的权威性; ⚫ 5.涉及营养素种类多
13 Characteristic of RDA ⚫ To be applicable to healthy people ⚫ Based on dietary ⚫ Recommendation, not a standard ⚫ Authority ⚫ To be involved in various nutrients. ⚫ 1.对象带有宏观性, 所有健康人, 普通人适用; ⚫ 2.以膳食为基础; ⚫ 3.是一个推荐值,不是标准; ⚫ 4.具有相当高的权威性; ⚫ 5.涉及营养素种类多
14 Significance ⚫ To reflect human dietary quality ⚫ As a indicating for getting to rational diet ⚫ As a recommended standard to arrange cookbook and to value dietary ⚫ 1.可反映人类膳食质量; ⚫ 2.作为合理营养需要达到满足程度的指标; ⚫ 3.作为食谱设计和膳食评估的推荐标准;以此 ⚫ 为依据设计人群的平衡膳食
14 Significance ⚫ To reflect human dietary quality ⚫ As a indicating for getting to rational diet ⚫ As a recommended standard to arrange cookbook and to value dietary ⚫ 1.可反映人类膳食质量; ⚫ 2.作为合理营养需要达到满足程度的指标; ⚫ 3.作为食谱设计和膳食评估的推荐标准;以此 ⚫ 为依据设计人群的平衡膳食
15 RDA的局限性 ⚫ 1. 无上限- 营养过剩 ⚫ 2. 需要大样 本
15 RDA的局限性 ⚫ 1. 无上限- 营养过剩 ⚫ 2. 需要大样 本