Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Chronic insomnia with short sleep duration is a significant risk factor for hypertension

02.04.2009
Findings suggest that chronic insomnia is a major public health concern, and its diagnosis and appropriate treatment should become the target of public health policy

A study in the April 1 issue of the journal SLEEP is the first to demonstrate that chronic insomnia with objectively measured short sleep time is an independent and clinically significant risk factor for hypertension.

Results indicate that participants with insomnia and an objectively measured, severely short sleep duration of less than five hours had a risk for hypertension that was 500 percent higher than participants without insomnia who slept more than six hours. People with insomnia and a moderately short sleep duration of five to six hours had a risk for hypertension that was 350 percent higher than normal sleepers.

In contrast, neither insomnia with a normal sleep duration of more than six hours nor a short sleep duration without a sleep complaint was associated with a significant risk for hypertension. This suggests that there is an additive or synergistic effect on hypertension risk when insomnia occurs in combination with a short sleep duration.

According to lead author Alexandros N. Vgontzas, MD, director of the Sleep Research and Treatment Center at the Penn State College of Medicine in Hershey, Pa., one of the study's strengths is that sleep duration was measured objectively by overnight polysomnography.

"It should be emphasized that many times the amount that we feel we slept is different from the actual amount," said Vgontzas. "Thus self-reported sleep duration cannot replace measured sleep duration."

The study involved a random sample of 1,741 men and women in central Pennsylvania with an average age of 49 years. Eight percent were classified as having chronic insomnia with symptoms persisting for at least one year; 22 percent were poor sleepers with a moderate to severe complaint of difficulty falling asleep, staying asleep, early final awakening or unrefreshing sleep; and 70 percent were normal sleepers. Twenty-one percent had a severely short sleep duration of less than five hours; 23 percent had a moderately short sleep duration of five to six hours; and 56 percent had a normal sleep duration of more than six hours.

Although the cross-sectional nature of the study did not allow for causality to be determined, the authors note that large amounts of clinical and research data indicate that it is most likely that insomnia leads to hypertension. Previous reports have shown that insomnia with short sleep duration is associated with the hypersecretion of cortisol, increased catecholaminergic activity, increased heart rate and 24-hour metabolic rate, and impaired heart rate variability. All of these conditions may lead to hypertension and other cardiovascular events.

Because the study sample is representative of the general population, the authors estimate that eight percent to 10 percent of the U.S. population may be at risk for hypertension and other significant medical complications related to chronic insomnia.

According to Vgontzas, the study indicates that people with insomnia should seek evaluation and treatment from their medical provider. Although the results suggest that people with insomnia have a lower risk for physical problems if their sleep duration is normal, they still are at risk for depression and may suffer from the behavioral effects of insomnia.

Kelly Wagner | EurekAlert!
Further information:
http://www.aasmnet.org

More articles from Health and Medicine:

nachricht Using fragment-based approaches to discover new antibiotics
21.06.2018 | SLAS (Society for Laboratory Automation and Screening)

nachricht Scientists learn more about how gene linked to autism affects brain
19.06.2018 | Cincinnati Children's Hospital Medical Center

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: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

Graphene assembled film shows higher thermal conductivity than graphite film

22.06.2018 | Materials Sciences

Fast rising bedrock below West Antarctica reveals an extremely fluid Earth mantle

22.06.2018 | Earth Sciences

Zebrafish's near 360 degree UV-vision knocks stripes off Google Street View

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>