Survey of almost 20,000 people finds 15 percent had experienced this sleep disorder in the last year and half of these at least once a week.
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Author: Dr Jeremy Dean
Psychologist, Jeremy Dean, PhD is the founder and author of PsyBlog. He holds a doctorate in psychology from University College London and two other advanced degrees in psychology. He has been writing about scientific research on PsyBlog since 2004. View all posts by Dr Jeremy Dean