Furthermore, although results in this study are only suggestive, they lend support to the idea that the relationship between insomnia and depression is not due to somatic symptom overlap. Results may also support the hypothesis that insomnia is primary to the presentation of depressive symptoms. read more
The relationship between sleep and depression is complex, as insomnia has been observed to be both a risk factor for and a consequence of depression. Epidemiologic studies indicate that as many as 70% of patients with a psychiatric disorder also complain of insomnia. read more
The relationship between insomnia and depression is far from simple, however. “Until recently, insomnia was typically seen as a symptom of depression,” says Michael L. Perlis, MD, an associate professor of psychiatry and director of the Behavioral Sleep Medicine Program at the University of Pennsylvania. read more