Psychology & Psychiatry

Study Sheds Light on a Potential Cause of Insomnia

(PhysOrg.com) -- In a study at Emory University, investigators have shed new light on a potential cause of insomnia, demonstrating that products of the immune system called cytokines may be the culprits.

Genetics

Brain cells involved in insomnia identified

An international team of researchers has identified, for the first time, the cell types, areas and biological processes in the brain that mediate the genetic risk of insomnia. This was made possible by assessing DNA and sleep ...

Health

Insomnia genes found

An international team of researchers has found, for the first time, seven risk genes for insomnia. With this finding the researchers have taken an important step towards the unravelling of the biological mechanisms that cause ...

Medical research

New models advance the study of deadly human prion diseases

By directly manipulating a portion of the prion protein-coding gene, Whitehead Institute researchers have created mouse models of two neurodegenerative diseases that are fatal in humans. The highly accurate reproduction of ...

Neuroscience

Study of fruit fly sleep reveals a genetic basis of insomnia

(Medical Xpress) -- On the surface, it’s simple: when night falls, our bodies get sleepy. But behind the scenes, a series of complex molecular events, controlled by our genes, is hard at work to make us groggy. Now, ...

Psychology & Psychiatry

Losing sleep, losing brain?

Chronic and severely stressful situations, like those connected to depression and posttraumatic stress disorder, have been associated with smaller volumes in "stress sensitive" brain regions, such as the cingulate region ...

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Insomnia

Insomnia is a symptom of any of several sleep disorders, characterized by persistent difficulty falling asleep or staying asleep despite the opportunity. Insomnia is a symptom, not a stand-alone diagnosis or a disease. By definition, insomnia is "difficulty initiating or maintaining sleep, or both" and it may be due to inadequate quality or quantity of sleep. It is typically followed by functional impairment while awake. Both organic and non-organic insomnia without other cause constitute a sleep disorder, primary insomnia.

According to the United States Department of Health and Human Services in the year 2007, approximately 64 million Americans regularly suffer from insomnia each year. Insomnia is 1.4 times more common in women than in men.

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