People with a disorder that causes them to kick or cry out during deep sleep are more likely to develop dementia or Parkinson's disease, a new Canadian study suggests.
"It's basically a disorder where you act out your dreams at night," explained study author Dr. Ronald B. Postuma, of McGill University in Montreal. "When people who have RBD [REM Sleep Behavior Disorder] dream they are in a fight, which is very common, they will make punching movements."
While sleep disorders are common, researchers emphasized that the majority are due to the stress of modern life and will not necessarily lead to neurological diseases.
"Half the population has a sleep problem, but most of the time, they're benign," said Michael Jakowec, an assistant professor of neurology at George and Mary Lou Boone Parkinson's Disease and Movement Disorders Research Center at the University of Southern California Keck School of Medicine. "We live in a society with anxiety, stress, late night TV and cappucinos."
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