While it's nearly impossible to be completely immune to negative thoughts, according to professor and study co-author, Meredith E. Coles, PhD, the study participants who endured regular sleep disruptions had trouble shifting their thoughts away from negativity. "People in this study have some tendencies to have thoughts get stuck in their heads, and their elevated negative thinking makes it difficult for them to disengage with the negative stimuli that we exposed them to."
Stewing in negativity is not only a downer, but as Dr. Coles point out, it can lead to, exacerbate, or worsen mental-health conditions, including depression and anxiety.
But even still, this doesn't exactly spell out deep sleep as the answer to depression or anxiety. Although the researchers were able to isolate certain associations, it's hardly a chicken-or-the-egg situation, and additional information is needed.
Still, it probably wouldn't be the worst thing to get in a solid eight hours of shut-eye.
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