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

First, the damage to the brain. Although the weight of brain tissue only accounts for 2-3% of human body weight, the blood flow of the 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 development stage, and their demand for blood, oxygen and glucose is higher than that of adults. If the blood sugar is too low, there will be obstacles in the conscious activity of the brain, which will inevitably affect the weight and morphological development of the brain in the long run.

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 stomach acid and various digestive enzymes will "digest" the gastric mucosa. In the long run, the normal function of cells secreting mucus will be destroyed, which will easily cause digestive system diseases such as gastric ulcer and duodenal ulcer.

Third, it causes arteriosclerosis, which is more likely to lead to obesity. Many young students are afraid of gaining weight and skip breakfast. There is no scientific basis for this practice. The human body's demand for heat is standard. If you don't eat breakfast, you will definitely increase your appetite for lunch and dinner. However, the amount of exercise after dinner 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 cause cholesterol and lipoprotein to deposit on the inner wall of blood vessels, leading to arteriosclerosis.

At present, young students' studies are very heavy, and their classes 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 the health of teenagers. I hope you and your classmates can take breakfast seriously instead of perfunctory, and hope your family can cooperate with you to grow up healthily.

1, slow you down: breakfast is the energy source of brain activity. If you don't eat breakfast, your body can't supply enough blood sugar for consumption, and you will feel tired, weak, inattentive, depressed and unresponsive.

2. Chronic diseases may "rise": skip breakfast and start a day's work with an empty stomach. In order to gain power, the body will use thyroid gland, parathyroid gland, pituitary gland and other glands 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": eating breakfast at 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 appear 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, which may cause 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 then fat, so don't think that skipping breakfast will promote the consumption of fat. On the contrary, skipping breakfast will make you eat more for lunch and dinner. Instead of losing weight, you will get fat.