There are many causes of hypoglycemia, such as starvation, diarrhea, drinking on an empty stomach, too much exercise, hypoglycemic drugs, and other factors. 1. Starvation: For example, not having meals on time or losing weight causes the body to be in a starvation state, which can lead to insufficient sugar intake and possibly hypoglycemia. 2. Diarrhea: diarrhea can cause the loss of body fluids, affecting the body’s metabolism, may also lead to hypoglycemia symptoms. 3. Drinking alcohol on an empty stomach: Drinking alcohol on an empty stomach may affect the breakdown of liver glycogen and consume too much glucose leading to hypoglycemia. 4. Excessive exercise: Excessive exercise can cause an increase in glucose metabolism, which can also lead to hypoglycemia symptoms. 5. Hypoglycemic drugs: diabetic patients who take too much medication or do not eat after taking medication may cause hypoglycemic symptoms. 6. Other factors: for example, taking certain drugs affects sugar metabolism, or due to liver damage, heart failure, insulinoma and other diseases, can also lead to hypoglycemia. It is recommended to go to the hospital for examination first, to clarify the cause of the disease and follow the doctor’s instructions for treatment.