Dozing off while watching TV in the elderly includes physiological factors and disease factors, and the disease factors include insufficient blood supply to the brain, medication factors and so on. 1. Physiological factors: watching TV after meals is more likely to cause drowsiness symptoms, after meals, intestinal tissues will be congested, thus causing the brain tissue to be relatively insufficient blood supply, which in turn causes drowsiness symptoms in the elderly. Lack of sleep and other reasons can also lead to the elderly watching TV dozing. 2. Disease factors (1) Insufficient blood supply to the brain: if the patient has a history of atherosclerosis, narrowing of cerebral blood vessels and insufficient blood supply to the brain tissues, the symptom of dozing off while watching TV can also occur. (2) Medication factors: if taking sedatives, such as alprazolam diazepam, or using anti-blocker drugs, such as paracetamol, cetirizine, etc., there may be symptoms of dozing off while watching TV in the elderly. Family members are advised to observe the patient’s symptoms carefully, and if the symptoms continue to worsen, then consult the neurology department of the hospital to clarify the cause of the symptoms.