Tags: chronic insomnia | linked | elevated | death risk

Chronic Insomnia Linked to Death Risk

Tuesday, 08 Jun 2010 08:25 AM

Individuals with chronic insomnia have an elevated risk of death, according to a research abstract that was presented at SLEEP 2010, the annual meeting of the Associated Professional Sleep Societies.

Results indicate that the risk of dying from all causes was three times higher in people with chronic insomnia than in people without insomnia. When the three other individual subtypes of insomnia were examined (difficulty getting back to sleep, chronic sleep-onset insomnia, and chronic sleep-maintenance insomnia in which sleepers awake repeatedly during the night) the risk remained elevated.

"The most surprising result was the increased high risk for mortality among individuals with chronic insomnia versus those without insomnia, even after adjustment for all of the potential confounding variables" lead author Laurel Finn, biostatistician at the University of Wisconsin-Madison, said in a statement. "The other important finding was the non-differentiation between subtypes of insomnia with respect to mortality risk."

The study involved 2,242 participants in the Wisconsin Sleep Cohort Study who completed two to three mailed surveys for years 1989, 1994 and 2000. Participants were considered to have chronic insomnia if they reported insomnia symptoms on at least two of the surveys. A social security death index search in May 2010 determined that 128 participants had died during a follow-up period of up to 19 years. Estimated mortality hazard ratios were adjusted for body mass index (BMI), age, and sex, as well as for self-reported medical conditions such as chronic bronchitis, heart attack, stroke, hypertension, diabetes, and depression.

Finn added that the results emphasize the need for physicians to provide effective treatments for insomnia even in the absence of coexisting health problems.

"Insomnia is a burdensome symptom and has a negative impact on sleep quality that may lead people to seek treatment," said Finn. "The identification of insomnia as a mortality risk factor may have clinical implications and raise the priority level for insomnia treatment."

The study was supported by the National Heart, Lung, and Blood Institute; the National Institute on Aging; and the National Center for Research Resources of the National Institutes of Health.

© HealthDay

   
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Individuals with chronic insomnia have an elevated risk of death, according to a research abstract that was presented at SLEEP 2010, the annual meeting of the Associated Professional Sleep Societies.
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2010-25-08
Tuesday, 08 Jun 2010 08:25 AM
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