Sleep, and the lack of it, could be a factor in Alzheimer's disease, according to a new study from Washington University School of Medicine in St. Louis.

FOX News Radio's Bill Vitka reports:

If you don't get enough sleep you may end up more than tired.

New research shows that people who have trouble sleeping may be at risk of developing Alzheimer's, as well as memory problems and personality disorders.

When sleep is interrupted it can trigger a buildup of plaque in the brain. Folks who wake up from sleep more than five times an hour had signs of plaque buildup, and are more likely to have pre-clinical Alzheimer's disease.

How it works isn't clear, but the study authors say better sleep habits might be able to slow the onset of Alzheimer's.

Bill Vitka, FOX News Radio