Less REM sleep increases death risk: JAMA Neurology
USA: Middle-aged and older adults with less rapid eye movement (REM) sleep are more likely to die, suggests a recent study in the journal JAMA Neurology. According to the study, decreased percentage of REM sleep may increase the risk for all-cause, cardiovascular, and other non-cancer-related mortality.
REM sleep has been linked with health outcomes, but not much is known about the relationship between REM sleep and mortality. Eileen B. Leary, Stanford University, Palo Alto, California, and colleagues investigated whether REM sleep is associated with a greater mortality risk in 2 independent cohorts. Also, they explored whether another sleep stage could be driving the findings.
This study used data from the Outcomes of Sleep Disorders in Older Men (MrOS) Sleep Study and Wisconsin Sleep Cohort (WSC). MrOS participants were recruited from December 2003 to March 2005, and WSC began in 1988. MrOS and WSC participants who had REM sleep and mortality data were included. The analysis was conducted from May 2018 to December 2019.
The primary outcome was all-cause and cause-specific mortality confirmed with death certificates.
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