WESTCHESTER, Ill. The first study to assess the stability of three aspects of sleep behavior in relation to long-term mortality finds an increased risk of mortality in short sleep, long sleep and frequent use of medications, according to a study published in the October 1 issue of the journal SLEEP.
The study, authored by Christer Hublin, MD, PhD, of the Finnish Institute of Occupational Health in Helsinki, Finland, focused on the responses of 21,268 twins to questionnaires administered in 1975 and 1981. The subjects were categorized as follows:
According to the results, significantly increased risk of mortality was observed both for short sleep in men (+26 percent) and in women (+ 21 percent), and for long sleep (+24 percent and +17 percent respectively), and also frequent use of hypnotics/tranquilizers (+31 percent in men and +39 percent in women). The effect of sleep on mortality varied between age groups, with strongest effects in young men.
Between 1975 and 1981, sleep length and sleep quality changed in about one-third of the population. In men, there was a significant increase for stable short (1.34) and stable long (1.29) sleep for natural deaths, and for external causes in stable short sleepers (1.62).
This study found an association between sleep behavior (most notably in sleep length) and mortality. The exact mechanisms remain unclear, and they should be assessed in experimental settings and other longitudinal studies. Morbid
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| Contact: Jim Arcuri jarcuri@aasmnet.org 708-492-0930 American Academy of Sleep Medicine Source:Eurekalert |