A sleep disorder that affects two per cent of people aged over 65 may be a major indicator that a person could develop brain diseases such as Parkinson’s or dementia.
Called REM sleep behaviour disorder, or RBD for short, it affects around one per cent of the general population, The Mirror reports.
REM is short for rapid eye movement, one of the stages of the sleep cycle. It plays a vital role in dreaming, memory, emotional processing, and the development of a healthy brain.
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