The lack of energy to eat may be due to the influence of environmental factors, such as hot weather, similar to the phenomenon of heat stroke will lead to the lack of energy to eat, but also patients may suffer from chronic gastritis, hypothyroidism, systemic diseases and so on. 1. The influence of environmental factors: usually hot weather in summer, high temperature, long time in the high temperature environment leads to the patient’s body lack of water, easy to cause heat stroke, accompanied by loss of appetite, body weakness and other symptoms. Patients can use patchouli water, patchouli capsules and other medicines under the guidance of the doctor to relieve, and move to a cool place, drink more water to speed up the metabolism. 2. Chronic gastritis: Chronic gastritis is related to autoimmunity and infection with Helicobacter pylori, etc. It will have an effect on the digestion of food, which will lead to loss of appetite. The inability to properly digest and absorb food nutrients to the body leads to a lack of energy to eat, or even weakness in the limbs, so there will be a lack of energy to eat, may also be accompanied by loss of appetite, anemia and other symptoms. 3. Hypothyroidism: there are usually obvious symptoms such as weakness and loss of appetite. A variety of systemic diseases such as anemia, leukemia and other early symptoms may also appear weakness, loss of appetite and other symptoms. Patients need to go to the hospital for relevant examinations to clarify the cause of the disease and then under the guidance of the doctor for appropriate treatment. In addition, other conditions can also lead to lack of energy to eat, and it is recommended that the patient be admitted to the hospital for examination in a timely manner.