That lack of sleep can make you feel miserable isn’t exactly an earth-shattering revelation but researchers from the State University of New York at Binghamton have been helping to make the link a little clearer. They studied 52 people who all had high scores on a questionnaire designed to measure repetitive negative thinking. The researchers found that the people who reported frequent sleep disturbances also found it more difficult to stop focusing on negative stimuli – once they had seen or experienced something unpleasant they found it more difficult to move on than the other participants. At the moment the researchers have only succeeded in establishing that poor sleep and a tendency to get stuck in negative thinking go together not that there is a causal link between the two characteristics but as negative repetitive thoughts are linked to both anxiety and depression it could be that lack of sleep plays a more important role in both than was first thought.
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