Sleepiness and sleepiness in the elderly may be related to physiological factors such as poor sleep quality, or it may be caused by insufficient cerebral blood supply and hypothyroidism. 1. Physiological factors: If the elderly think too much, it may affect their sleep, resulting in poor sleep quality and insufficient sleep time, which may cause sleepiness and sleepiness, and may also be accompanied by weakness, dizziness and other symptoms. 2. Insufficient cerebral blood supply: some elderly people have narrow intracranial and extracranial blood vessels, the blood flow rate will be significantly slowed down, affecting the blood supply to the brain, causing insufficient blood supply and oxygen supply to the brain tissue, which may cause drowsiness and sleepiness, and may be accompanied by dizziness, headache and other symptoms. 3. Hypothyroidism: This disease can cause the patient’s thyroid gland to fail to produce enough thyroid hormones, resulting in a weakening of the body’s basal metabolic rate, which may cause sleepiness and sleepiness, and may be accompanied by symptoms such as poor memory and fatigue. Drowsiness and sleepiness in the elderly may also be related to other factors, if there are other obvious discomfort, you should consult a doctor as soon as possible for targeted treatment.