Trouble falling asleep at bedtime or in the middle of the night? It
could impact your risk for developing dementia

Date:
March 6, 2023
Source:
Elsevier
Summary:
Adding to the growing body of evidence on sleep disturbances
and cognitive impairment, new research finds significant links
between three measures of sleep disturbance and the risk for
developing dementia over a 10-year period. The results associate
sleep-initiation insomnia (trouble falling asleep within 30
minutes) and sleep medication use with higher risk for developing
dementia. The investigators also found that people who reported
having sleep-maintenance insomnia (trouble falling back to sleep
after waking) were less likely to develop dementia over the course
of the study.


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FULL STORY ========================================================================== Adding to the growing body of evidence on sleep disturbances and cognitive impairment, new research finds significant links between three measures
of sleep disturbance and the risk for developing dementia over a 10-year period.

The results, reported in the American Journal of Preventive Medicine,
published by Elsevier, associate sleep-initiation insomnia (trouble
falling asleep within 30 minutes) and sleep medication use with higher
risk for developing dementia.

The investigators also found that people who reported having
sleep-maintenance insomnia (trouble falling back to sleep after waking)
were less likely to develop dementia over the course of the study.


==========================================================================
"We expected sleep-initiation insomnia and sleep medication usage to
increase dementia risk, but we were surprised to find sleep-maintenance insomnia decreased dementia risk," explained lead investigator Roger Wong,
PhD, MPH, MSW, an Assistant Professor in the Department of Public Health
and Preventive Medicine, SUNY Upstate Medical University, Syracuse, NY,
USA. "The motivation behind this research was prompted on a personal
level. My father has been experiencing chronic sleep disturbances since
the COVID-19 pandemic began, and I was concerned how this would affect
his cognition in the future. After reading the existing literature, I
was surprised to see mixed findings on the sleep-dementia relationship,
so I decided to investigate this topic." This research is novel because
it is the first to examine how long-term sleep disturbance measures are associated with dementia risk using a nationally representative US older
adult sample. Previous research has associated REM sleep behavior,
sleep deprivation (less than five hours of sleep), and the use of
short-acting benzodiazepines with cognitive decline. Their results for sleep-maintenance insomnia support other recent studies using smaller,
separate data samples.

This study used 10 annual waves (2011?2020) of prospective data from the National Health and Aging Trends Study (NHATS), a longitudinal panel study
that surveys a nationally representative sample of Medicare beneficiaries
aged 65 years and older within the USA. This study included only people
who were dementia-free at baseline in 2011.

There is no cure for dementia and recent pharmaceutical approaches to
treat dementia have had limited success, pointing to the importance of preventive approaches to dementia. "By focusing on the variations in sleep disturbances, our findings can help to inform lifestyle changes that can
reduce dementia risk," explained co-investigator Margaret Anne Lovier,
MPH, Department of Public Health and Preventive Medicine, SUNY Upstate
Medical University, Syracuse, NY, USA.

While the mechanism for decreased dementia risk among those with sleep- maintenance insomnia is still unknown, the investigators theorize that
greater engagement in activities that preserve or increase cognitive
reserve may thereby decrease dementia risk.

Recent evidence indicates there is a higher prevalence of sleep
disturbances among older adults than among other age groups. This could
be attributed to a variety of factors including anxiety about the COVID-19 pandemic or warmer nights as a consequence of climate change.

"Older adults are losing sleep over a wide variety of concerns. More
research is needed to better understand its causes and manifestations and
limit the long-term consequences," added Dr. Wong. "Our findings highlight
the importance of considering sleep disturbance history when assessing
the dementia risk profile for older adults. Future research is needed to examine other sleep disturbance measures using a national longitudinal
sample, whether these sleep- dementia findings hold true for specific
dementia subtypes, and how certain sociodemographic characteristics may interact with sleep disturbances to influence dementia risk."
* RELATED_TOPICS
o Health_&_Medicine
# Sleep_Disorder_Research # Insomnia_Research #
Alzheimer's_Research # Healthy_Aging
o Mind_&_Brain
# Sleep_Disorders # Insomnia # Obstructive_Sleep_Apnea
# Dementia
* RELATED_TERMS
o Delayed_sleep_phase_syndrome o Sleep_deprivation
o Sleep_disorder o Insomnia o Night_terror o
Circadian_rhythm_sleep_disorder o Sleep_apnea o
Obstructive_sleep_apnea

========================================================================== Story Source: Materials provided by Elsevier. Note: Content may be edited
for style and length.


========================================================================== Journal Reference:
1. Roger Wong, Margaret Anne Lovier. Sleep Disturbances and Dementia
Risk in
Older Adults: Findings From 10 Years of National U.S. Prospective
Data.

American Journal of Preventive Medicine, 2023; DOI: 10.1016/
j.amepre.2023.01.008 ==========================================================================

Link to news story: https://www.sciencedaily.com/releases/2023/03/230306143443.htm

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