![]() ![]() So the distinction between normal aging and dementia is clear. For example, brain tissue (obtained during autopsy) in people with Alzheimer disease looks different from that in older people without the disease. read more, differ from normal aging in other ways as well. Certain kinds of dementia, such as Alzheimer disease Alzheimer Disease Alzheimer disease is a progressive loss of mental function, characterized by degeneration of brain tissue, including loss of nerve cells, the accumulation of an abnormal protein called beta-amyloid. Thus, dementia is considered a disorder, even though it is common later in life. ![]() People with dementia also have difficulty doing normal daily tasks (such as driving, cooking, and handling finances) and understanding the environment, including knowing what year it is and where they are. ![]() For example, people who are aging normally may misplace things or forget details, but people who have dementia forget entire events. Typically, symptoms include memory loss, problems using language and. By the second half of the 14th century, peasants there were living five to seven years longer than in the previous 50 years. The data consist of the age at which the landholder inherited land, a sequence of ages at which he was known to be alive and possibly the age at death. We use a selection of these data for estimating the life expectancy of adult males from the higher ranks of English society. In contrast, the decline that occurs in dementia Dementia Dementia is a slow, progressive decline in mental function including memory, thinking, judgment, and the ability to learn. In the Middle Ages data on landholders were recorded. This decline includes increased difficulty learning new things such as languages, decreased attention span, and increased forgetfulness. For example, with advanced age, a mild decline in mental function is nearly universal and is considered normal aging. Also, functional decline that is part of aging sometimes seems similar to functional decline that is part of a disorder. ![]()
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