Elderly people love to sleep may be because of Alzheimer’s disease, endocrine diseases, cerebral atherosclerosis, elevated blood sugar, etc. 1. Alzheimer’s disease: most common in the elderly, patients can show drowsiness, slow reaction, memory loss and other symptoms, initially there can be memory loss, that is, the recent events are easy to forget, with the development of the disease process can gradually appear distant memory loss, that is, things happened a long time ago to forget, the patient daytime drowsiness, slow reaction. 2. Endocrine diseases: if the elderly suffer from endocrine diseases, such as hypothyroidism, can also be manifested as sleepy. 3. Cerebral atherosclerosis: many old people have cerebral atherosclerosis, due to the narrowing of blood vessel lumen and thickening of blood vessel wall, which can easily lead to insufficient blood supply and oxygenation of brain tissues, which will make the old people want to sleep all the time, accompanied by slow reaction, drowsiness and other manifestations. 4. Elevated blood sugar: some patients with high blood sugar can also have more sleep. It is recommended to control blood pressure, blood glucose and lipid risk factors, develop a regular work and rest time, adjust the rhythm of life, reduce the pressure of life, to quit smoking, alcohol and other bad habits. And should consult the doctor in time, clear diagnosis, active treatment.