社会经济的不断发展,生活水平的日益提高,家庭饮食的重点已开始从吃饱转向吃得科学。传统营养学所主张的平衡膳食是指全面达到营养供给量的膳食。这种膳食意味着:首先使摄食者在热能和营养素上达到生理需要量,其次在各种营养素之间建立起一种生理上的平衡,如蛋白质、脂肪、碳 With the continuous development of social economy and living standard, the focus of family diet has begun to shift from full food to science. Balanced diet advocated by traditional nutrition refers to the diet that fully reaches the nutrient supply. This diet means: first of all, to make the caloric reach the physiological requirements of heat and nutrients, and secondly to establish a physiological balance among various nutrients such as protein, fat, carbon