Aging and the Occurrence of Dementia

Abstract
IN RECENT years, several studies have addressed the issue of whether dementia is an "age- or aging-related disorder."1-3 In spite of numerous prevalence4-13 and incidence14-22 studies, it is still unclear if the exponential increase in dementia frequency with age continues, even in the advanced ages, as an inevitable feature of aging,9,10,13 or if the occurrence reaches a plateau in people 85 years and older.2,3