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!
The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung
A sudden drop in outdoor temperature increases the risk of respiratory infections
11.01.2017 | University of Gothenburg
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...
Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...
Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
10.01.2017 | Event News
09.01.2017 | Event News
20.01.2017 | Awards Funding
20.01.2017 | Materials Sciences
20.01.2017 | Life Sciences