It doubles every five years. It's one of the risk factors. One of the major problems with1 aging that involves one or another kind of dementing illness, is memory loss. In addition to that there are other problems as well. Those involve geographical disorientation.
People tend to get lost in their houses.
Or they can get lost in driving the car. It's a memory loss. They tend to misidentify people who they've known for years. That sometimes may cause quite a bit of commotion when they arrive to family gatherings. They wander, which is they walk aimlessly and look for something, rummage through the drawers and closets.