The numbers are pretty grim: More than half of all 85-year-olds suffer some form of dementia.
But here's the good news: Brain researchers say there are ways to boost brain power and stave off problems in memory and thinking.
In other words, brain decline is not necessarily an inevitable part of aging. "It's simply not pre-destined for all human beings," Bryan James tells Shots. He's an epidemiologist at the Rush Alzheimer's Disease Center in Chicago.
