人吃三餐的奥秘

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通常吃饭总是分早晨、中午、晚上三餐进食。一到进餐时刻,消化酶的活性就会增高。仔细想起来,这是很奇怪的。在我们人体中,到底是什么东西在起作用并且安排得这样巧妙呢?据观察,实验室里的老鼠,尽管任何时候都有食物摆在面前,但仍然是一日只出现三次摄食高峰,虽然老鼠和人不一样,是在夜间吃食的。这表明夜行动物在夜间进食,昼行动物在昼间进食,明暗的节奏对进食产生着影响。现在都知道,人体内有一座知道昼夜交替并按其节奏来安排各种活动和新陈代谢的生物钟,人们就是在这座钟的支配下睡眠、活动、吃饭的。这种钟在老鼠体内也有,它位于鼠脑的视叉上核处。实验室里的老鼠在通常情况下,夜间的进食量为90%,昼间只有10%。但如果把它的视叉上核——生物钟弄坏,由于进食的节奏破坏了,便出现昼间、夜间进食量各占一半的情 Usually eat meals in the morning, noon, three meals at night. As soon as the meal is over, digestive enzyme activity increases. It is very strange to think of it carefully. What in our body is working and arranged so skillfully? It has been observed that mice in the laboratory, despite having food at any time, still show only three peak ingestion on a daily basis, Unlike rats, people eat at night. This indicates that nocturnal animals eat at night, daytime animals eat at daytime, and light and dark rhythms have an impact on eating. It is now known that there is a biological clock in the human body that knows the alternating day and night and arranges various activities and metabolism according to its rhythm, and people sleep, activity and eat at the clock. This clock is also found in mice, which is located on the suprasellar nucleus of the rat brain. In the laboratory, mice normally consume 90% of their food during the night and only 10% during the daytime. However, if its fork on the fork on the nuclear - biological clock broke, due to eating rhythm destruction, there will be daytime, nighttime consumption of each half of the situation
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