(HealthDay)—Some people in their 90s stay sharp whether their brain harbors amyloid protein plaques—a hallmark of Alzheimer’s disease—or not, but why?
That’s the question researchers sought answers for among 100 people without dementia, average age 92, who were followed for up to 14 years. Their answer? A combination of genetic luck and a healthy, fulfilling lifestyle.
“The vast majority of research studies on aging and Alzheimer’s disease try to understand what factors predict disease and memory impairment. We turned these questions upside-down, asking ‘What seems to protect us from disease and impairment in our 90s?'” said lead researcher Beth Snitz, an associate professor of…
