Loss of appetite



Food intake is regulated by two central organs of the hypothalamus, the ventral lateral "feeding center" and the ventral medial "satisfaction center", which produces a feeling of fullness after eating, inhibiting the activity of the former, and contracting the brain gut peptide CCK seems to have a satiety effect, may be involved in the regulation of feeding behavior, causing a decrease in appetite, may be caused by digestive diseases, or may be caused by other system diseases other than the digestive system or dietary central diseases.

Mental health problems with various eating disorders or diets should be prevented early. It is very important to cultivate children's good eating habits and cultivate a healthy personality and adaptability to the social environment.



1. Excessive physical or mental work: It will cause insufficient blood supply to the stomach wall, and the stomach will secrete and feed, so that the digestive function of the stomach will be weakened.

2, emotional stress and excessive fatigue: In today's fast-paced and competitive society, people are prone to insomnia, anxiety and other nervous emotions, leading to gastric secretion of acid interference dysfunction, causing appetite decline.

3, alcoholism smoking: alcohol can damage the taste buds on the tongue, alcohol can also directly damage the gastric mucosa, if suffering from ulcer disease, chronic gastritis, alcoholism will aggravate the condition, and even cause perforation of the stomach and duodenum; The harm of the gastric mucosa is not less than drinking, and smoking can also cause chronic gastritis.

4, hunger and satiety: The stomach is often in a state of hunger, which will cause damage to the gastric mucosa for a long time.

5, overeating makes the stomach over-expanded: food stays too long, lightly causing mucosal damage, and heavy stomach perforation.

6, cold food: often eat cold food, especially eating cold food before going to bed can easily lead to stomach cold, nausea, vomiting, loss of appetite.

7, fullness before going to bed: dinner too full, will inevitably increase the burden of gastrointestinal, gastric secretion disorder, prone to loss of appetite. In addition, it can also lead to obesity, sleeplessness, stones, diabetes, and the like.

8, exercise after eating: strenuous exercise after a short period of time will lead to increased gastric peristalsis, followed by stomach cramps, stomach pain, discomfort, nausea and vomiting, loss of appetite, and some may even cause stomach torsion.

9, drug factors: Some chronic diseases require long-term medication, long-term use of certain drugs can lead to drug-induced taste disorders. Sometimes it has a certain relationship with the environment, mental state, and food processing.


an examination

Related inspection

Basal gastric secretion, gastroscope, plasma, 11-deoxycorticosterone, urine ammonia

The urgency, duration and progress of the loss of appetite, whether there are other accompanying manifestations such as fever, nausea, vomiting, difficulty in swallowing, diarrhea, constipation, abdominal pain, history of medication, drinking history, tuberculosis, History of gastritis, hepatitis, kidney disease, diabetes, whether there is a history of trauma and a clear cause, whether the weight changes. Pay attention to nutritional status and mental state. Whether the skin has yellow staining, dehydration, edema, hyperpigmentation, whether there is heart enlargement, whether there is liver congestion, whether the liver jugular vein reflux sign is positive; whether there is cirrhosis, splenomegaly and ascites sign, whether there is tenderness or rebound Pain and lumps.


Differential diagnosis

Mainly identified with eating disorders. Eating disorders in children are a type of problem that is highly valued by parents and physicians. According to a survey of 528 only children, the incidence of eating disorders due to mental health problems was as high as 78.64%. The main reasons were improper feeding methods, excessive love, excessive dependence, children's perseverance, eating with interest, lack of warmth and so on.

First, partial eclipse

Partial eclipse means that children only like to eat certain foods, not other foods. Children's partial eclipse and the eating habits of parents and those around them, as well as the daily comments of adults on food, are related to the child's psychologically good impression. If some parents have serious partial eclipse habits, they even impose their own preferences on their children. Some parents only pay attention to adding protein to their children, while ignoring vegetables and fruits rich in trace elements and vitamins. Another reason for children's partial eclipse is that parents do not understand the basic knowledge of children's nutrition. The meals prepared for children are very monotonous. Monotonous foods are repeated many times, causing bad stimulation to children's nervous system, even if children love food. Eating too much can also cause disgust, which can cause a partial eclipse.

Second, anorexia

Anorexia is a serious form of appetite suppression. The occurrence of anorexia in children is related to the influence of internal and external environment. If you are eating, some unpleasant things or unpleasant sounds can cause appetite suppression and even anorexia. Most notably, there is a serious eating disorder characterized by anorexia in children and adolescents, which is clinically known as anorexia nervosa. This is a type of eating disorder that deliberately diets to significantly reduce weight. This problem most often occurs in adolescent women. At first, patients worried that their body was fat, and some people thought that they were too fat when they were obviously thin, so they took the initiative to control their food intake, or excessive exercise, vomiting, diarrhea and other means to lose weight. In severe cases, the body weight can be reduced by more than 25%, eventually leading to malnutrition, metabolism and endocrine disorders. Although the exact cause of the disease is unknown, many scholars believe that psychosocial and cultural factors have a clear relationship with the disease. This may be related to the blind pursuit of slimness among young people in recent decades.

Third, bulimia

Bulimia refers to a seizure, inability to control a large amount of food in a short period of time. These patients have unstoppable appetite for eating, at least twice a week, each time eating a lot, if they do not get a chance to eat, they will be flustered, restless, and complain of strong hunger.

Fourth, the eclipse

The eclipse refers to persistent biting of non-nutritive substances such as dirt, dirt, stones and paper, which can lead to complications such as lead poisoning, intestinal obstruction and intestinal parasitic diseases. These patients are often accompanied by other forms of mental disorders, more common in patients with mental retardation and schizophrenia. Short-term eating behavior can also occur in intestinal parasites and trace element deficient. Adolescents before and after puberty may have a heterosexual diet.

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