包括睡眠——清醒以及体温和排尿、激素的分泌和物质代谢等在内的许多生理、生化机能,在一日内有节律地变动,这种节律是和机体内生物钟日周变化环境因素同步的。一般认为,高等动物节律的同步因素是光线、温度等物理因素和食物、水等营养因素以及亲朋等生物、社会因素。好像可把行为大致分为昼行性和夜行性一样,最主要的因素是明暗和昼夜的变化。近十年来,通过大白鼠等动物实验证明某些生理节律除了光线明暗变化之外还受饮食方式的影响。因此,饮食行为、营养代谢与昼夜节律的关系正在引起人们的注目。本文想介绍一下关于食物所具有的同步作用(包括动物与人)以及它的生理意义,它与疾病的关系。摄食节律与摄食反射按正常规律生活的人们,早、午、晚一日三餐几乎都在一定的时间进行,而大白鼠等鼠 Many physiological and biochemical functions, including sleep-wakefulness and body temperature and urination, hormonal secretion and substance metabolism, have a rhythm change within a day, which is in line with the changing environmental factors of the circadian clock in the body. Generally believed that the synchronization factor of higher animal rhythm is light, temperature and other physical factors and food, water and other nutritional factors as well as friends and relatives and other biological and social factors. Seems to be roughly divided into acts of daytime and nocturnalism, the most important factor is the brightness and darkness and day and night changes. In the past ten years, animal experiments such as rats have proved that some circadian rhythms are affected by the dietary mode in addition to light and light changes. Therefore, the relationship between dietary behavior, nutritional metabolism and circadian rhythm is drawing people’s attention. This article would like to introduce the synchronization of food (including animals and humans) as well as its physiological significance, its relationship with the disease. Feeding rhythm and feeding reflex According to the normal law of life, morning, afternoon and evening meals almost always in a certain period of time, while mice and other rats