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Is Sleep Timing a Risk Factor for Dementia?

Is Sleep Timing a Risk Factor for Dementia

by Adeline Dorcas on Sep 22 2022 4:44 PM
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Highlights:
  • Sleep timing and time in bed (TIB) is associated with dementia risk
  • Long time in bed and early sleep timing are major risk factors for developing mental health problems such as dementia, Alzheimer's disease and cognitive decline in older adults
Sleeping early and rising up late may increase risk of mental health problems like dementia, Alzheimer's disease and cognitive decline in older adults, suggests a new study.
The findings of the study are published in the Journal of the American Geriatrics Society.

Link Between Bedtime Routine and Dementia

New research suggests that the time people go to bed and the amount of time they sleep may affect their risk of developing dementia.

In the study of 1,982 older adults in China who were free of dementia at the start of the study, 97 participants were diagnosed with dementia during an average follow-up of 3.7 years.

Risk of dementia was 69% higher in those who slept for more than 8 hours (versus 7-8 hours) and 2-times higher for those who went to bed before 9 PM (versus 10 PM or later).

“This suggests that cognitive function should be monitored in older adults who report prolonged time in bed and advanced sleep timing,” the authors wrote.

Reference:

  1. Associations of sleep timing and time in bed with dementia and cognitive decline among Chinese older adults: A cohort study - ( http://dx.doi.org/10.1111/jgs.18042)


Source-Eurekalert


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