
Poor sleep quality linked to accelerated brain aging, study finds. Sleep experts weigh in.
CBSN
We know quality sleep is good for our overall health, but new research is pointing to its importance for brain health too.
In the study, published Wednesday in online journal Neurology, researchers found people with poor sleep quality have more signs of poor brain health in late middle age.
Of the 589 participants, those who reported two to three poor sleep characteristics had an average brain age that was 1.6 years older than those with no more than one poor sleep characteristic. And those with more than three poor sleep characteristics had an average brain age 2.6 years older.

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the edge of our solar system, evading all our efforts to spot it. Some astronomers say the strange, clustered orbits of icy rocks beyond Neptune indicate that something big is out there, which they have dubbed "Planet Nine."