人类的健康要受到来自身体内外两方面因素的影响,其中对自身营养状态影响因素的研究近年来得到了更为广泛的重视。从宏观上讲,整个人群营养状态既要受到生活环境可利用食物资源的制约,又要受到其成员们自己所持有的营养知识(knowledge)、营养态度(affitude)和营养行为(practice) Human health is affected by both internal and external factors, and the research on the factors affecting its own nutritional status has received more extensive attention in recent years. From a macro perspective, the nutritional status of the entire population is not only constrained by the food resources available in the living environment, but also by the nutrition knowledge, affitude, and practice that the members themselves hold.