Occasionally skipping breakfast is usually not harmful, but patients who skip breakfast for a long time may suffer from hypoglycemia, gallstones and other diseases. 1. Hypoglycemia: Patients who skip breakfast for a long period of time may lead to hypoglycemia. The main symptoms of hypoglycemia in general include autonomic symptoms, such as tremor, palpitations (rapid heartbeat, often accompanied by panic) and anxiety, sweating, hunger, and sensory abnormalities. Patients may also have cognitive impairment, behavioral changes, and psychomotor abnormalities in severe cases. 2. Gallstones: If patients skip breakfast for a long time, gallbladder contraction will be weakened, bile excretion will be reduced, and bile salts will accumulate for a long period of time, which may lead to the formation of stones. Generally, there are no obvious symptoms in the early stage of gallstones, but with the development of the disease, biliary colic, epigastric pain and other symptoms may occur. Therefore, it is recommended that patients should eat breakfast on time to minimize the occurrence of the disease. Patients are advised to seek timely medical treatment if they experience any of the above hazards to avoid delays.