In a new large, prospective study, researchers found that midday napping (siestas) reduced coronary mortality by about one third among men and women. The study appears in the February 12, 2007 issue of The Archives of Internal Medicine.
The researchers, led by lead author Androniki Naska, lecturer of hygiene and epidemiology in UAMS, and senior author Dimitrios Trichopoulos, professor of cancer prevention and epidemiology at HSPH, looked at 23,681 individuals living in Greece who, at the beginning of the study, had no history of coronary heart disease, stroke or cancer. The study participants were followed for an average of 6.3 years. Siestas are common in the Mediterranean region and several Latin American countries and those countries also tend to have low mortality rates of coronary heart disease. Some prior studies had looked at the association, with conflicting results. However, this was the first large prospective study of individuals who were healthy at enrollment and the first study to control in detail for risk factors such as diet and physical activity.
The results showed that people who regularly took siestas, defined by the researchers as napping at least three times per week for an average of at least 30 minutes, had a 37% lower coronary mortality than those not taking siestas. Occasional nappers showed a statistically non-significant 12% reduction in coronary mortality. The apparent protective effect of siestas was particularly strong among working men and weaker among those not working, mainly retirees. Among working women, there were too few deaths to allow inferences.
The authors believe that an afternoon siesta in a healthy individual may act as a stress-releasing process, since there is considerable evidence that stress has both short and long term adverse effects on incidence of and mortality from coronary heart disease. The fact that the association was more evident among working men compared to retirees apparently reflects the different stress levels these subgroups have to cope with.
Trichopoulos says the public health message is clear—if you can take a midday nap, do so.
Todd Datz | EurekAlert!
Pan-European study on “Smart Engineering”
30.03.2017 | IPH - Institut für Integrierte Produktion Hannover gGmbH
Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
17.03.2017 | University of Maryland
The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
29.03.2017 | Materials Sciences
29.03.2017 | Physics and Astronomy
29.03.2017 | Earth Sciences