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Study finds harmful risk factors of violent sleep disorder

Health
ANI


Washington D.C.: Kicking and yelling during sleep? You may want to know the risk factors of a violent sleep disorder.

According to a recent study, taking antidepressants for depression, having post-traumatic stress disorder or anxiety diagnosed by a doctor are risk factors for a disruptive and sometimes violent sleep disorder called rapid eye movement (REM) sleep behavior disorder.

The study was published in the journal of 'Neurology', the medical journal of the American Academy of Neurology. The study also found that men are more likely to have the disorder.

REM sleep is the dream state of sleep. During normal REM sleep, your brain sends signals to prevent your muscles from moving. However, for people with REM sleep behavior disorder, those signals are disrupted. A person may act out violent or action-filled dreams by yelling, flailing their arms, punching or kicking, to the point of harming themselves or a person sleeping next to them.

"While much is still unknown about REM sleep behavior disorder, it can be caused by medications or it may be an early sign of another neurologic condition like Parkinson's disease, dementia with Lewy bodies or multiple system atrophy. Identifying lifestyle and personal risk factors linked to this sleep disorder may lead to finding ways to reduce the chances of developing it," said study author Ronald Postuma.

The study looked at 30,097 people with an average age of 63. Researchers screened participants for a variety of health conditions and asked them about lifestyle, behaviour, social, economic and psychological factors.

In addition, every participant was asked, "Have you ever been told, or suspected yourself, that you seem to act out your dreams while asleep?"

Researchers then identified 958 people, or 3.2 per cent, with possible REM sleep behavior disorder, after excluding participants with Parkinson's disease, dementia, Alzheimer's disease or sleep apnea.

Researchers found those with the disorder were over two-and-a-half times as likely to report taking antidepressants to treat depression, with 13 per cent of those with the disorder taking them compared to 6 per cent of those without the disorder. People with the disorder were also two-and-a-half times as likely to have post-traumatic stress disorder. They were twice as likely to have mental illness, and over one-and-a-half times as likely to have psychological distress.

Other findings were that men were twice as likely as women to have possible REM sleep behaviour disorder, 59 per cent of those with the disorder were male, compared to 42 per cent of those without the disorder.

People with possible REM sleep behaviour disorder were 25 per cent more likely than those without the disorder to be moderate to heavy drinkers, with 19 per cent of those with the disorder moderate to heavy drinkers compared to 14 per cent of those without the disorder. They had slightly less education, an average of 13.2 years of education compared to an average of 13.6 years for those without the disorder. They also had lower income and were more likely to have smoked.

"Our research does not show that these risk factors cause REM sleep behavior disorder, it only shows they are linked. Our hope is that our findings will help guide future research, especially because REM sleep behavior disorder is such a strong sign of future neurodegenerative disease. The more we understand about REM sleep behavior disorder, the better positioned we will be to eventually prevent neurologic conditions like Parkinson's disease," concluded Postuma. 

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