What happens in the body when starving – Sohu health-douke

Hungry, what happens in the body – Sohu in addition to make people feel hungry health empty belly, have the desire to eat, but also caused a series of reactions in the brain, liver, pancreas, kidney, muscle and other organs, including metabolic adjustment, weight, function etc.. In order to illustrate the problem, we assume a scenario: a healthy adult one day after a normal lunch (12), no longer eat, gradually into starvation mode (during Ta physical activity as usual, no disease, trauma or other accidents). Let’s take a look at the reaction of his vital organs. After 5 pm (lunch 4, 5 hours after lunch), food (especially sugar) after digestion and absorption, blood glucose (blood glucose) to the level before the meal, the blood in a total of 3, 5 grams of glucose. Brain, muscle and other organs continue to consume glucose, blood sugar has continued downward trend. If the blood sugar level is too low (hypoglycemia), the brain will be difficult to work properly (blood sugar is almost the only energy nerve tissue), so will make the following adjustments, in order to maintain glucose homeostasis: muscle cells stop glucose uptake, and make use of muscle glycogen reserves (about 180~300 grams), glycogen consumption with water loss (the water is 2 times the weight of the weight), glycogen leads to muscle weight and volume reduction. The storage of glycogen in the liver cells (about 80~100 g) is broken down into glucose, which is mainly used in the brain and red blood cells. Liver weight was reduced, volume change was not obvious (liver weight of about 1 kg). Heart, kidney, liver and other energy consuming organs, mainly to the oxidation of fatty acids as energy, rarely consumed glucose. In short, this time with the energy consumption of glycogen (reserve the normal diet), muscle glycogen supply muscle glycogen supply to the brain (and red blood cells and other minority groups). Other organs utilize fatty acids as an energy source and only a small amount of adipose tissue is consumed. The next morning (after 10 hours), glycogen (especially glycogen depleted blood glucose) once again faced with low risk, to avoid hypoglycemia affects the brain, the body again made the following adjustments: the liver cells began to synthesis of glucose, the raw material is non sugar substances, such as glycerol (from fat decomposition) and amino acids, amino acids from muscle protein breakdown (with water loss, water loss is 4 times heavier than the weight of the protein, which causes muscle volume) is further reduced, further reduce the weight (weight loss effect). The kidney can also produce glucose, but its output is lower than the liver, which mainly supply the brain and red blood cells. The muscle, heart, kidney and liver to consume fatty acids, resulting in decomposition of adipose tissue (fat consumption began). The liver cells began using fatty acid metabolites (acetyl coenzyme A) synthesis "ketone" (acetone, acetoacetate and beta hydroxybutyrate). The blood is transported to the ketone body heart, kidney, muscle and brain as energy use, indirect consumption of adipose tissue. The next afternoon (24 hours after stopping eating). The liver continues to synthesize glucose, and the production of glucose in the kidney相关的主题文章: