Link found between poor sleep quality and increased risk of death
Quality, in addition to quantity, is important for maintaining health, according to a research abstract that will be presented on Wednesday, June 10, at SLEEP 2009, the 23rd Annual Meeting of the Associated Professional Sleep Societies. Results indicate that over the average follow-up of eight years, 854 of the 5,614 participants died. Two sleep-stage transition types were associated with higher mortality risk: wake-to-non-REM and non-REM-to-wake.
According to lead author Alison Laffan, PhD, former graduate student at the Johns Hopkins Bloomberg School of Public Health and current post-doctoral fellow at the California Pacific Medical Center in San Francisco, Calif., mounting evidence from a number of studies shows that poor sleep increases risk for adverse health outcomes.
"In light of this growing body of evidence, people should strive to maintain good sleep habits, such as going to bed and getting up at the same time each day and sleeping for seven to eight hours each night," said Laffan.
The study involved data from 5,614 Sleep Heart Health Study participants who underwent overnight polysomnography to characterize sleep. Health outcomes were monitored for the following eight years. Sleep fragmentation was defined using an index of the number of sleep stage transitions per hour of sleep. In addition to a composite transition index, indexes of each of the six types of transitions were also tested. The relative risk of death as a function of each transition index was calculated using proportional hazards models, adjusting for age, gender, body mass index, race, hypertension, cardiovascular disease, smoking status, respiratory disturbance index and arousal index.
According to the authors of the study, obstructive sleep apnea (OSA), a major cause of sleep fragmentation, has been linked to increased risk for all-cause mortality; however, most studies have not directly measured fragmentation. Findings of this study were able to directly measure the relationship between sleep fragmentation and mortality.
Source: American Academy of Sleep Medicine
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Other sources
- Socioeconomic status, gender and marital status influence sleep disturbancesfrom PhysorgWed, 10 Jun 2009, 8:21:10 UTC
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- Parental presence at bedtime may result in sleep difficultiesfrom Science BlogWed, 10 Jun 2009, 7:42:16 UTC
- Poor sleep is associated with lower relationship satisfaction in both women and menfrom Science BlogWed, 10 Jun 2009, 7:42:14 UTC
- First-time moms' exhaustion caused by sleep fragmentation, rather than timing of sleepfrom Science BlogWed, 10 Jun 2009, 7:42:13 UTC
- Rheumatoid arthritis is associated with poor sleep in womenfrom Science BlogWed, 10 Jun 2009, 7:42:12 UTC
- Naps with rapid eye movement sleep increase receptiveness to positive emotionfrom Science BlogWed, 10 Jun 2009, 7:42:11 UTC
- Stable marriage is linked with better sleep in womenfrom Science BlogWed, 10 Jun 2009, 7:42:08 UTC
- Rheumatoid arthritis is associated with poor sleep in womenfrom PhysorgWed, 10 Jun 2009, 7:35:11 UTC
- Older adults less affected by sleep deprivation than younger adults during cognitive performancefrom PhysorgWed, 10 Jun 2009, 7:35:07 UTC
- Insomnia With Objective Short Sleep Duration In Men Is Associated With Increased Mortalityfrom Science DailyTue, 9 Jun 2009, 15:07:18 UTC
- Adolescent obesity linked to reduced sleep caused by technology use and caffeinefrom PhysorgTue, 9 Jun 2009, 7:49:26 UTC
- Later parental-mandated bedtimes for teens linked to depression and suicidal thoughtsfrom PhysorgTue, 9 Jun 2009, 7:49:22 UTC
- Genetic link found between stress-induced sleep loss and intrusive thinkingfrom PhysorgTue, 9 Jun 2009, 7:28:34 UTC
- Insomnia suffers need increased brain activation to maintain normal daily functionfrom Science BlogTue, 9 Jun 2009, 4:35:14 UTC
- Evening chronotype in high school students is linked with lower college GPAfrom Science BlogTue, 9 Jun 2009, 4:35:12 UTC
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