The typical manifestation of Alzheimer’s disease is reduced ability to perform daily living activities and behavioral abnormalities, which can lead to memory loss and reduced ability to perform daily living activities. Alzheimer’s disease” or “dementia of old age” refers to dementia that occurs in old age due to various causes. There are three main causes of Alzheimer’s disease (Alzhermer′s). It used to be called “progeria”. 2. Multiple infarct dementia. It used to be called “cerebral atherosclerotic dementia”. 3. Dementia due to other causes. These include brain tumors, traumatic brain injury, infection, poisoning, and metabolic disorders that cause dementia in old age. There are older people in every family, and everyone gets older. “Old age is the most important risk factor for dementia, and 1 in 3 people over the age of 85 may have dementia. Older people are very afraid of getting dementia. Studies have shown that people who live alone, are introverted, have low literacy, use aluminum dining utensils for a long time, have a positive family history of dementia, have a history of head trauma, have high blood pressure, have a history of depression, drink excessive alcohol for a long time, use drugs, and have long-term occupational exposure are at risk for dementia and should be screened regularly.