The research used data from the National Health and Ageing Trends Study (NHATS), which details longitudinal panel research that surveys a nationally representative sample of Medicare beneficiaries aged 65 years and older within the USA.
Furthermore, this study included only people who were dementia-free at the start in 2011.
“By focusing on the variations in sleep disturbances, our findings can help to inform lifestyle changes that can reduce dementia risk,” said co-investigator Margaret Anne Lovier.
While the mechanism for decreased dementia risk in people who struggle to fall back to sleep after waking is unclear, the investigators think that greater engagement in activities that preserve or increase cognitive reserve may help reduce dementia risk.
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