Loss of Good Sleep Linked to All-Cause Mortality Save
A US study shows that nearly two-thirds of the population had suboptimal 5-year sleep duration trajectories with a resultant 29% increase in risk of all-cause mortality.
A community-based cohort survey study of adults (40-79 yrs.) from the Southern Community Cohort Study was performed between 2008 and 2013. Sleep duration was self-reported at study enrollment and at 5-year follow-up. At each time point, sleep was categorized as short (<7 hours), healthy (7-9 hours), or long (>9 hours). Nine sleep trajectories were defined based on 5-year change over time. Cause of death was ascertained via linkage to the National Death Index through December 31, 2022.
From a total of 46 928 adults (mean age 53 years; 65% women; 63% Black and 37% White), 66% had suboptimal 5-year sleep trajectories.
- 53.0% of optimal trajectory were Black
- 13 579 deaths occurred after a median 12.6 years of follow-up, (4135 from CVD, 3067 from cancer)
- Suboptimal trajectories were associated with as much as 29% greater risk of all-cause mortality
- Observed associations varied by race and household income, with the greatest risk observed among White adults with greater household incomes.
These findings highlight the importance of maintaining healthy sleep duration over time to reduce mortality risk.
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