Geriatrics Palmer Exam 2 Practice

The main idea is that dementia prevalence increases with age. As people get older, the risk of developing dementia rises due to cumulative brain changes and long-term exposure to risk factors, so more people in older age groups carry the condition at any given time. Population data commonly show about 10% of people around age 65 have dementia, rising toward about 50% by age 85. That pattern—increasing prevalence with age—is the best description because it reflects how aging drives both the development and the persistence of dementia in the population. The other possibilities (staying the same, decreasing, or being unknown) contradict well-established epidemiologic evidence.