Common sleep disorder combo could be deadly: study
Monday, 13 December, 2021
People who suffer from both insomnia and obstructive sleep apnoea are more likely to suffer from heart problems and are almost 50% more likely to die than those without either condition, according to researchers from .
The researchers studied a large US-based dataset of over 5000 people to understand the risks of co-morbid insomnia and obstructive sleep apnoea (COMISA). The participants, aged around 60 years at the beginning of the study and 52% female, were followed for approximately 15 years, with 1210 people dying during that time.
The researchers found that participants with COMISA were two times more likely to have high blood pressure and 70% more likely to have cardiovascular disease than participants with neither insomnia nor sleep apnoea.
The study also showed participants with COMISA had a 47% increased risk of dying (for any reason) compared to participants with no insomnia or sleep apnoea, even when other factors known to increase mortality were taken into account.
鈥淚nsomnia and obstructive sleep apnoea are the two most common sleep disorders, affecting 10 to 30% of the population, but people can often suffer from both at the same time,鈥� said Dr Bastien Lechat from .
鈥淧reviously, little was known about the impact of COMISA but what we did know is that for people with both conditions, health outcomes are consistently worse than those with neither condition or those with either condition alone.鈥�
鈥淭his is the first study to assess mortality risk in participants with co-morbid insomnia and sleep apnoea,鈥� said Dr Lechat, who led the research.
鈥淕iven that these people are at higher risk of experiencing adverse health outcomes, it is important that people undergoing screening for one disorder should also be screened for the other.鈥�
While further research is needed to investigate what might be causing the higher mortality risk for those with COMISA, researchers say further investigation is also warranted to ensure treatments are working effectively.
鈥淪pecific treatments may be needed for people with co-occurring disorders so it鈥檚 important we examine the efficacy of insomnia and sleep apnoea treatments in this specific population,鈥� Dr Lechat said.
The Adelaide Institute for Sleep Health at Flinders University is continuing to conduct research to understand the reasons that insomnia and sleep apnoea co-occur so frequently, and to develop more effective treatment approaches.
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