People who sleep more than eight hours a night may have an increased risk of stroke, according to a new study published in the February 25, 2015, online issue of Neurology®, the medical journal of the American Academy of Neurology.
The study found that people who slept more than eight hours a night, called long sleepers, were 46 percent more likely to have a stroke than people who slept six to eight hours a night, which was considered an average amount of sleep.
People who shifted over time from sleeping less than six hours a night to sleeping more than eight hours a night were nearly four times more likely to have a stroke as people who consistently slept an average amount.
The study involved 9,692 people with an average age of 62 who had never had a stroke. They were asked about their sleeping habits once and then again about four years later. The participants were followed for an average of 9.5 years. During that time, 346 people had a stroke.
Of the 986 people who slept more than eight hours a night, 52 had a stroke, compared to 211 of the 6,684 people who slept an average amount. The relationship between long sleep and stroke stayed the same after researchers accounted for factors such as high cholesterol, high blood pressure, body mass index and physical activity.
“We don’t know yet whether long sleep is a cause, consequence or early marker of ill health,” said study author Yue Leng, M.Phil., of the University of Cambridge in the United Kingdom. “More research is needed to understand the relationship between long sleep and stroke.”
Alberto Ramos, MD, MSPH, of the University of Miami Miller School of Medicine and a member of the American Academy of Neurology, who wrote a corresponding editorial, said, “Since people whose sleep patterns changed from short to long were nearly four times as likely to have a stroke, it’s possible that this could serve as an early warning sign, suggesting the need for additional tests or for people to take steps known to reduce stroke risk, such as lowering blood pressure and cholesterol.”
Leng and her colleagues also conducted a meta-analysis, which is a review of previous studies on sleep duration and stroke. Those results also found an association between long sleep and stroke.
The study was supported by the Medical Research Council of the United Kingdom and Cancer Research UK.
To learn more about stroke, please visit www.aan.com/patients
The American Academy of Neurology, an association of more than 28,000 neurologists and neuroscience professionals, is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Alzheimer’s disease, stroke, migraine, multiple sclerosis, brain injury, Parkinson’s disease and epilepsy.
For more information about the American Academy of Neurology, visit http://www.aan.com
Rachel L. Seroka | American Academy of Neurology
The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft
Europe’s Demographic Future. Where the Regions Are Heading after a Decade of Crises
10.08.2017 | Berlin-Institut für Bevölkerung und Entwicklung
Using ultrafast flashes of laser and x-ray radiation, scientists at the Max Planck Institute of Quantum Optics (Garching, Germany) took snapshots of the briefest electron motion inside a solid material to date. The electron motion lasted only 750 billionths of the billionth of a second before it fainted, setting a new record of human capability to capture ultrafast processes inside solids!
When x-rays shine onto solid materials or large molecules, an electron is pushed away from its original place near the nucleus of the atom, leaving a hole...
For the first time, physicists have successfully imaged spiral magnetic ordering in a multiferroic material. These materials are considered highly promising candidates for future data storage media. The researchers were able to prove their findings using unique quantum sensors that were developed at Basel University and that can analyze electromagnetic fields on the nanometer scale. The results – obtained by scientists from the University of Basel’s Department of Physics, the Swiss Nanoscience Institute, the University of Montpellier and several laboratories from University Paris-Saclay – were recently published in the journal Nature.
Multiferroics are materials that simultaneously react to electric and magnetic fields. These two properties are rarely found together, and their combined...
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems Holding GmbH about commercial use of a multi-well tissue plate for automated and reliable tissue engineering & drug testing.
MBM ScienceBridge GmbH successfully negotiated a license agreement between University Medical Center Göttingen (UMG) and the biotech company Tissue Systems...
Pathogenic bacteria are becoming resistant to common antibiotics to an ever increasing degree. One of the most difficult germs is Pseudomonas aeruginosa, a...
Scientists from the MPI for Chemical Energy Conversion report in the first issue of the new journal JOULE.
Cell Press has just released the first issue of Joule, a new journal dedicated to sustainable energy research. In this issue James Birrell, Olaf Rüdiger,...
19.09.2017 | Event News
12.09.2017 | Event News
06.09.2017 | Event News
19.09.2017 | Event News
19.09.2017 | Physics and Astronomy
19.09.2017 | Power and Electrical Engineering