Lack of appetite, not feeling hungry and unable to sleep are related to gastrointestinal dysfunction, pyloric obstruction and other factors. Gastrointestinal dysfunction can have a variety of manifestations, and some people are manifested by slow peristalsis after the disease. Due to the relatively slow peristalsis of the stomach, the food in the stomach cannot be emptied in time, so it can lead to loss of appetite. Since food is always present in the stomach, patients will not only feel less hungry, but also experience a feeling of bloating in the stomach. Many people suffer from gastrointestinal disorders when they are in a bad mood, such as nervousness, depression, or excitement, and these emotions can also affect sleep, so they may suffer from insomnia during the illness. Some people have pyloric obstruction, which causes food in the stomach not to be discharged normally into the duodenum, and stays in the stomach for a long time, so the patient will have a loss of appetite and no hunger because there is always food in the stomach.