Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Sleep apnea, depression linked in Stanford study

07.11.2003


People with depression are five times more likely to have a breathing-related sleep disorder than non-depressed people, according to a study at the Stanford University School of Medicine. The study is the first to show a link between depression and sleep apnea along with its related disorders.

Although it remains unclear how the conditions are linked, Maurice Ohayon, MD, PhD, said his study should encourage physicians to test depressed patients for this type of sleep disorder.

"Physicians who see people with depression shouldn’t stop at the first diagnosis, but instead look into the presence of a breathing-related sleep disorder," said Ohayon, an associate professor of psychiatry and behavioral sciences. His study appears in the current issue of the Journal of Clinical Psychiatry.



These disorders include such breathing anomalies as chronic, disruptive snoring and obstructive sleep apnea syndrome, a disorder in which people stop breathing for brief periods up to hundreds of times a night. Left untreated, the disorders can lead to hypertension, stroke and cognitive deterioration. They can also affect a person’s daily routine and disrupt his or her familial, social and professional life.

"This type of disorder increases a person’s chances of feeling sleepy and irritable, having a dispute with a family member or colleague, or getting into a traffic accident," said Ohayon.

Several studies have suggested that sleep apnea is associated with a higher rate of depressive disorder and that treating sleep apnea could help control depression in patients. But no previous study had explored this association and its risk factors in the general population.

To assess the impact of the two disorders in the general population, Ohayon conducted a telephone survey with adults in five countries (the United Kingdom, Germany, Italy, Portugal and Spain). More than 18,000 people were chosen as a representative sample of 206 million Europeans. The participants answered questions pertaining to sleep quality and schedules, breathing-related sleep disorders, mental disorders and medical conditions.

After analyzing the data, Ohayon found that 2.1 percent of the people surveyed had sleep apnea - a figure consistent with data from past studies on selected populations - and 2.5 percent had another type of breathing-related sleep disorder. Eighteen percent of respondents who were experiencing a depressive disorder (4 percent of all respondents) also had a breathing-related sleep disorder, compared with 3.8 percent of non-depressed respondents. That represents a five-times increased likelihood of breathing-related sleep disorders among depressed people.

"This is the first study to show the strength of the link between the two disorders," said Ohayon, adding that even after controlling for obesity and hypertension (important factors in each disorder) the association remained strong.

It remains unclear whether depression occurred before or after sleep apnea, and to what extent sleep apnea contributes to the maintenance or aggravation of depression. Ohayon said the link between treating sleep apnea syndrome and the evolution of depressive disorders needs further investigation. He hopes physicians will consider the association between the disorders and depression when treating depressed patients. "Once people have their sleep apnea recognized, there is a lot we can do to help them," he said.

Ohayon received funding for his research from the Medical Research Council of Quebec and an unrestricted educational grant from the Sanofi-Synthelabo Group, a pharmaceutical company.

Michelle Brandt | EurekAlert!
Further information:
http://mednews.stanford.edu

More articles from Health and Medicine:

nachricht Deep stimulation improves cognitive control by augmenting brain rhythms
04.04.2019 | Picower Institute at MIT

nachricht Black nanoparticles slow the growth of tumors
04.04.2019 | Technische Universität München

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Explosion on Jupiter-sized star 10 times more powerful than ever seen on our sun

A stellar flare 10 times more powerful than anything seen on our sun has burst from an ultracool star almost the same size as Jupiter

  • Coolest and smallest star to produce a superflare found
  • Star is a tenth of the radius of our Sun
  • Researchers led by University of Warwick could only see...

Im Focus: Quantum simulation more stable than expected

A localization phenomenon boosts the accuracy of solving quantum many-body problems with quantum computers which are otherwise challenging for conventional computers. This brings such digital quantum simulation within reach on quantum devices available today.

Quantum computers promise to solve certain computational problems exponentially faster than any classical machine. “A particularly promising application is the...

Im Focus: Largest, fastest array of microscopic 'traffic cops' for optical communications

The technology could revolutionize how information travels through data centers and artificial intelligence networks

Engineers at the University of California, Berkeley have built a new photonic switch that can control the direction of light passing through optical fibers...

Im Focus: A long-distance relationship in femtoseconds

Physicists observe how electron-hole pairs drift apart at ultrafast speed, but still remain strongly bound.

Modern electronics relies on ultrafast charge motion on ever shorter length scales. Physicists from Regensburg and Gothenburg have now succeeded in resolving a...

Im Focus: Researchers 3D print metamaterials with novel optical properties

Engineers create novel optical devices, including a moth eye-inspired omnidirectional microwave antenna

A team of engineers at Tufts University has developed a series of 3D printed metamaterials with unique microwave or optical properties that go beyond what is...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

Fraunhofer FHR at the IEEE Radar Conference 2019 in Boston, USA

09.04.2019 | Event News

 
Latest News

New automated biological-sample analysis systems to accelerate disease detection

18.04.2019 | Life Sciences

Explosion on Jupiter-sized star 10 times more powerful than ever seen on our sun

18.04.2019 | Physics and Astronomy

New eDNA technology used to quickly assess coral reefs

18.04.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>