人每天都要吃东西。吃是人的一种本能,饿了就要吃东西。饥肠辘辘的滋味实在令人难受,会让人感到肚子空空的,胃一阵阵痉挛,还会眼发花,头发昏,四肢无力。这是生活中许多人都曾亲身体验过的。那么,饥饿感到底是怎样产生的呢?为什么有的人因病切除了胃,却照样还是有饥饿感呢?从生理上讲,饥饿是来自整个身体的,饥饿感是体内的热量正在减少、不足的综合信号。其实,人体内储存的可利用的碳水化合物是相当少的,半天时间就会消耗殆尽,此时必须补充食物,摄入更多的碳水化合物、脂肪和蛋白质,才能维持体能。如果长时间不补充食物,而又在不断消耗体能的话,人体内的血糖浓度 People eat every day. Eating is a human instinct, we must eat when hungry. Hungry taste really uncomfortable, will make people feel empty stomach, stomach bursts, but also blink of an eye, hair faint, weakness. This is what many people in life have personally experienced. So, what is the feeling of hunger? And why some people get rid of the stomach due to illness, but still have hunger? Physiologically speaking, hunger comes from the whole body, hunger is the body’s calories are declining, Insufficient synthesis signal. In fact, the amount of available carbohydrates stored in the human body is rather low, which will be depleted in half a day. At this time, we must replenish the food and consume more carbohydrates, fat and protein to maintain our fitness. If you do not add food for a long time, but continue to consume physical energy, the body’s blood glucose concentration