Its harm to the body is mainly manifested in the following aspects:

First, the harm to the brain. Although the weight of brain tissue only accounts for 2-3% of human body weight, the blood flow of brain is about 800 ml per minute, the oxygen consumption is about 45 ml per minute, and the sugar consumption is about 5 grams per hour. Teenagers' brain tissue is in the developmental stage, and the demand for blood, oxygen and glucose is higher than that of adults. If blood sugar is too low, there will be obstacles in brain conscious activity, which will inevitably affect the weight and morphological development of the brain for a long time.

Second, the harm to the digestive system. Under normal circumstances, the food eaten the night before is emptied from the stomach into the intestine after about six hours. If you don't eat breakfast the next day, the gastric acid and various digestive enzymes in the stomach will "digest" the gastric mucosa. In the long run, the normal function of cells secreting mucus will be destroyed, and it is easy to cause digestive system diseases such as gastric ulcer and duodenal ulcer.

Third, it causes arteriosclerosis and is more likely to lead to obesity. Many young students are afraid of gaining weight and don't eat breakfast. There is no scientific reason for this practice. The human body's demand for calories is standard. If you don't eat breakfast, it is bound to increase the amount of food you eat at lunch and dinner. However, after dinner, the amount of exercise is generally small, which is more likely to cause fat accumulation and lead to obesity. In addition, not eating breakfast for a long time will also make cholesterol and lipoprotein deposit on the inner wall of blood vessels, leading to arteriosclerosis.

At present, young students' studies are very heavy, and the courses are full every morning, which makes their brains and bodies in a state of high tension. Because skipping breakfast for a long time or unreasonable nutrition will do great harm to teenagers' health, I hope you and your classmates can take breakfast seriously rather than perfunctory, and hope that your family can cooperate with you for healthy growth.

1, make you slow down: breakfast is the source of energy for brain activity. If you don't eat breakfast and your body can't supply enough blood sugar for consumption, you will feel tired, tired, unable to concentrate, depressed and slow-witted.

2, chronic diseases may "go up": skip breakfast and start a day's work hungry. In order to gain motivation, the body will use glands such as thyroid gland, parathyroid gland and pituitary gland to burn tissues, which will not only cause hyperthyroidism, but also make the body sour and suffer from chronic diseases.

3, the stomach may be "rebellious": do not eat breakfast until noon, the stomach is hungry for a long time, which will cause excessive gastric acid secretion, which is easy to cause gastritis and gastric ulcer.

4, constipation "out of the cage": in the case of regular meals, the phenomenon of gastrocolon reflex will naturally occur in the human body, simply speaking, it is to promote defecation; If you don't eat breakfast as a habit, it may cause gastrocolonic reflex disorder for a long time, thus causing constipation.

5. It will bring you closer to obese people: Once the human body realizes the lack of nutrition, it consumes carbohydrates and protein first, and fat last, so don't think that skipping breakfast will contribute to the consumption of fat. On the contrary, skipping breakfast will make you eat more lunch and dinner, and instead of losing weight, you will become fatter.

Friendly reminder: Don't think that you can lose weight by absorbing less calories without breakfast. According to nutritionists, breakfast is the most difficult meal for everyone to turn into fat in a day. If you don't eat breakfast every day, you will only eat more lunch. Japanese sumo wrestlers just eat lunch and dinner instead of breakfast, so breakfast is very important, and the ratio of breakfast, lunch and dinner is preferably 3∶2∶ 1, so that the essence you eat in one day can be consumed in the most vigorous time.

According to nutrition experts, breakfast is the most important meal of the day. After a rest from sleep, the body is fully prepared for a day's work and study. At this time, it is really necessary to take in rich nutrition to cope with the consumption of the whole day. What harm will it bring if you don't eat breakfast?

First, skipping breakfast will cause hypoglycemia and make people depressed. After a night's sleep, the nutrition in the human body has been exhausted. At this time, the blood sugar concentration is in a low state. If you don't eat breakfast, the blood sugar concentration will continue to decline, resulting in pale face, weakness of limbs and listlessness, and sometimes even hypoglycemia shock.

Second, it will seriously affect memory. According to experts, the energy of the brain comes from glucose, which can only be accumulated in the liver and kidneys and can only be stored for 8 hours. If you don't eat in the morning, you will have insufficient energy in your brain and cause memory decline.

Third, skipping breakfast is prone to chronic diseases such as gastritis and ulcer.

Fourth, induce gallstones. When people are on an empty stomach in the morning, the saturation of cholesterol in the bile in the body is high, so eating breakfast is beneficial to the discharge of bile in the gallbladder; On the contrary, it is easy to precipitate cholesterol in bile and produce stones. A survey of women with gallstones by British scholars found that people with gallstones were related to long-term skipping breakfast.

Therefore, we should not only eat breakfast, but also attach great importance to the quality of breakfast. Some people think that "breakfast is gold, lunch is silver and dinner is copper". Sticking to breakfast every day is one of the elements to prolong life.

Often skipping breakfast will bring a lot of harm to human body.

(a), do not eat breakfast is easy to suffer from digestive tract diseases. After a night's sleep, the food in the intestines has been digested in the morning and needs to be supplemented urgently. If you don't eat breakfast well, lunch will inevitably increase greatly today, resulting in excessive burden on the gastrointestinal tract, leading to gastric ulcer, gastritis, indigestion and other diseases.

(2) skipping breakfast will reduce brain function and affect brain development. When you are hungry, your blood sugar will drop, which will cause brain disorders, dizziness, inattention, memory loss, fatigue, and even affect your brain function, leading to mental decline.

(3) If you don't eat breakfast, your cholesterol is high. People who skip breakfast have 33% higher cholesterol than those who eat breakfast, and all children with high cholesterol have fatty lines in their blood vessels, which is an early sign of atherosclerosis.

(4) It is easy to suffer from gallstones if you don't eat breakfast for a long time. When people are on an empty stomach, the concentration of cholesterol in their bile is particularly high. In the case of normal breakfast, the gallbladder contracts and cholesterol is excreted with bile. If you don't eat breakfast, your gallbladder won't contract, and it's easy to have gallstones for a long time.