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Are grandma, grandpa sleepy during the day? They may be at risk for diabetes, cancer, more

March 01, 2020

MINNEAPOLIS - Older people who experience daytime sleepiness may be at risk of developing new medical conditions, including diabetes, cancer and high blood pressure, according to a preliminary study released today that will be presented at the American Academy of Neurology's 72nd Annual Meeting in Toronto, Canada, April 25 to May 1, 2020.

The condition called hypersomnolence is defined as excessive daytime sleepiness even after having seven or more hours of sleep. It can be debilitating for some people, affecting the way that they perform at work and in other daily activities.

"Paying attention to sleepiness in older adults could help doctors predict and prevent future medical conditions," said study author Maurice M. Ohayon, M.D., Ph.D., DSc, of Stanford University in Stanford, Calif., and a member of the American Academy of Neurology. "Older adults and their family members may want to take a closer look at sleeping habits to understand the potential risk for developing a more serious medical condition."

The study involved 10,930 people; 34% of participants were 65 years or older.

Researchers interviewed participants over the phone two times, three years apart. In the first interview, 23% of people over 65 met the criteria for excessive sleepiness. In the second interview, 24% reported excessive sleepiness. Of those, 41% said the sleepiness was a chronic problem.

The study found that people who reported sleepiness in the first phone interview had a 2.3 times greater risk of developing diabetes or high blood pressure three years later than those who did not experience sleepiness. They were also twice as likely to develop cancer. Of the 840 people who reported sleepiness at the first interview, 52 people, or 6.2%, developed diabetes compared to 74 people, or 2.9% of those who were never sleepy during the day. Also, of the 840 people who reported sleepiness, 20 people, or 2.4%, developed cancer compared to 21 people, or 0.8% of those who were never sleepy during the day.

The results remained the same after researchers adjusted for other factors that could affect daytime sleepiness, such as gender and sleep apnea.

People who reported daytime sleepiness during both interviews had a 2.5 times greater risk of developing heart disease.

People who reported sleepiness only in the second interview were 50% more likely to also have diseases of the musculoskeletal system and connective tissue, such as arthritis, tendinitis and lupus, than those who did not have daytime sleepiness.

A limitation of the study was that it relied on participants' memories, rather than monitoring their sleep length and quality and daytime sleepiness in a sleep clinic.
-end-
The study was supported by the Arrillaga Foundation.

Learn more about sleep at BrainandLife.org, home of the American Academy of Neurology's free patient and caregiver magazine focused on the intersection of neurologic disease and brain health. Follow Brain & Life® on Facebook, Twitter and Instagram.

The American Academy of Neurology is the world's largest association of neurologists and neuroscience professionals, with over 36,000 members. The AAN is 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, concussion, Parkinson's disease and epilepsy.

For more information about the American Academy of Neurology, visit AAN.com or find us on Facebook, Twitter, Instagram, LinkedIn and YouTube.

Media Contacts:

Renee Tessman, rtessman@aan.com, (612) 928-6137
Michelle Uher, muher@aan.com, (612) 928-6120

American Academy of Neurology

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