Aging News & Information
Adults with Sleep Problems May See Brains Shrink,
Especially Seniors Over 60
'Not yet known whether poor sleep quality is a cause
or consequence of changes in brain structure'
3, 2014 – Sleep difficulties may be linked to faster rates of decline in
brain volume, particularly for those seniors over the age of 65,
according to a study published in the September 3, 2014, online issue of
Neurology, the medical journal of the American Academy of Neurology.
Sleep has been proposed to be “the brain’s
housekeeper”, serving to repair and restore the brain.
The study included 147 adults from age 20 through
84 years old. Researchers examined the link between sleep difficulties,
such as having trouble falling asleep or staying asleep at night, and
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All participants underwent two MRI brain scans, an
average of 3.5 years apart, before completing a questionnaire about
their sleep habits.
A total of 35 percent of the participants met the
criteria for poor sleep quality, scoring an average of 8.5 out of 21
points on the sleep assessment. The assessment looked at how long people
slept, how long it took them to fall asleep at night, use of sleeping
medications, and other factors.
The study found that sleep difficulties were linked
with a more rapid decline in brain volume over the course of the study
in widespread brain regions, including within frontal, temporal and
The results were more pronounced in people over 60
“It is not yet known whether poor sleep quality is
a cause or consequence of changes in brain structure,” said study author
Claire E. Sexton, DPhil, with the University of Oxford in the United
“There are effective treatments for sleep problems,
so future research needs to test whether improving people’s quality of
sleep could slow the rate of brain volume loss. If that is the case,
improving people’s sleep habits could be an important way to improve
The study was supported by Research Council of
Norway, the U.K, National Institute for Health Research, Wellcome Trust,
Norwegian Research Council, European Research Council and University of
To learn more about brain health, visit
The American Academy of Neurology reports to be
dedicated to promoting the highest quality patient-centered neurologic
care. A neurologist is a doctor with specialized training in diagnosing,
treating and managing disorders of the brain and nervous system such as
Alzheimer’s disease, stroke, migraine, multiple sclerosis, brain injury,
Parkinson’s disease and epilepsy. For more information about the
American Academy of Neurology, visit
http://www.aan.com or Facebook, Twitter, Google+ or YouTube.
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