热量限制对生物的有利作用张桥热量限制（ｃａｌｏｒｉｃｒｅｓｔｒｉｃｔｉｏｎＣＲ）是指一种有计划的减少由食物提供的热量，限制热量摄取的营养供给标准。一般是将正常自由进食（ＡＬ）所得热量减去３０％～４０％，但补充足够的维生素和矿物质。早在６０年前，有学者... Caloric restriction restriction refers to a planned nutrient supply that reduces the amount of calories provided by food and limits caloric intake. Normally, the calories from normal free food (AL) are subtracted from 30% to 40%, but enough vitamins and minerals are added. As early as 60 years ago, some scholars ...