“While staying mentally active in old age has been linked to a delayed onset of dementia, seniors who engage in such brain ‘exercise’ may actually have a faster rate of decline once Alzheimer’s is diagnosed, researchers reported Wednesday. … mentally active older adults may develop dementia later than those who ‘exercise’ their brains less often. But once they do develop it, they are in a more extensive state of brain damage. That, at least, is ‘the working hypothesis,’ said Dr. Charles B. Hall, a researcher at Albert Einstein College of Medicine in New York.” (09/01/10)