Articles with the keyword: 
Skimping on sleep linked to hardened arteries
sea-maid submitted, created time 2 weeks 11 hours (www.newscientist.com)
Just one extra hour of sleep a day appears to lower the risk of developing calcium deposits in the arteries, a precursor to heart disease, U.S. researchers said on Tuesday. The finding adds to a growing list of health consequences - including weight gain, diabetes and high blood pressure - linked to getting too little sleep 
Lack of Sleep Linked to Heart Problems
sea-maid submitted, created time 2 weeks 1 day (www.time.com)
No one likes to walk into work after just a few fitful hours of sleep. But now there's evidence that not getting enough sleep may have more serious consequences than dark circles under your eyes the next morning. Researchers at the University of Chicago report in the Journal of the American Medical Association that too little sleep can promote calcium buildup in the heart arteries, leading to the plaques that can then break apart and cause heart attacks and strokes.
piggy submitted, created time 4 weeks 11 hours (sciencenow.sciencemag.org)
Is there a link between sleep and type 2 diabetes? That's one implication of a new study, which has found that variants in a gene that helps regulate the body's daily rhythms increase the chance of developing the disease. The find, reported online yesterday in three papers in Nature Genetics, may suggest new ways to treat or prevent the ever more common disorder.
The body's internal clock--which controls the circadian rhythm--is kept accurate by a hormone called melatonin, whose levels fall during the day and rise at night
Bird Brains Split Lookout Duty
sea-maid submitted, created time 1 month 4 weeks (sciencenow.sciencemag.org)
What good is half a brain? Good enough for migratory birds to avoid predators when napping in the daytime. A new study finds that migrating birds take mini-naps during the day but only rest half their brains at a time, allowing them to keep one eye
Surgery may help, but not cure, obese children with sleep disorders
sea-maid submitted, created time 3 months 2 weeks (esciencenews.com)
Surgical interventions for many obese children suffering from obstructive sleep apnea may not cure the problem, says new research presented at the 2008 American Academy of Otolaryngology – Head and Neck Surgery Foundation (AAO-HNSF) Annual Meeting & OTO EXPO in Chicago, IL. Obese children are at increased risk for developing obstructive sleep apnea (OSA), a sleep disorder that is associated with a decreased quality of life as well as behavioral, neurocognitive, cardiovascular, metabolic, endocrine, and psychiatric complications
sea-maid submitted, created time 5 months 1 week (sciencenow.sciencemag.org)
A new study has found that older rats seem to replay previous events less and, as a result, have more trouble remembering than younger animals.
Could those memory problems be due to a decline in the brain's replay during sleep? How can these results be extrapolated to humans?
sea-maid submitted, created time 5 months 2 weeks (sciencenow.sciencemag.org)
Researchers have spent decades trying to understand the confusing array of sleep patterns found in mammals. A donkey typically snoozes for just three hours a day, for instance, and armadillos and bats can be dead to the world for twenty hours a day. To explain the differences, scientists have offered a slew of theories, ranging from the idea that smaller animals need more sleep to conserve energy and maintain body temperature to the need to avoid predators.
Sleep loss produces false memories
sea-maid submitted, created time 5 months 3 weeks (www.nature.com)
Sleepless nights can increase your chances of forming false memories, according to researchers in Germany and Switzerland. But, as for so many aspects of life, it seems that coffee can save the day.
kavin submitted, created time 5 months 3 weeks (www.news-medical.net)
Difficulty falling asleep and staying asleep increases as women go through menopause, according to research by Rush University Medical Center. Waking up earlier than planned also increases through late perimenopause but decreases when women become postmenopausal. The study is published in the July 1 issue of the journal SLEEP.
"Sleep difficulties, especially problems staying asleep, are relatively prevalent concerns among women going through the menopausal transition," said Dr
Secret sleep of birds revealed in brain scans
sea-maid submitted, created time 5 months 4 weeks (www.newscientist.com)
Birds may not be as "bird-brained" as we thought. Zebra finches show many features of sleep that had previously been assumed to be the sole preserve of mammals.
The finding raises new questions about the complexity of the bird brain and about the evolution of sleep as we know it.
Mammalian sleep is characterised by distinct stages: slow wave sleep (SWS), intermediate sleep (IS) and rapid-eye-movement (REM) sleep, with a progression towards more REM sleep.
EEG recordings of the brain's electrical activity also show specific landmarks called "K-complexes" and "spindles" during SWS.
Nocturia in Men Less Than 50 Years of Age May Be Associated with Obstructive Sleep Apnea Syndrome
kavin submitted, created time 6 months 2 weeks (www.sciencedirect.com)
Nocturia was found in 30 patients with OSAS (41.1%). The AHI was higher in patients with nocturia than in those without nocturia (P
Removal of "superfluous" retina creates (time) blind mice...
Darkfrog submitted, created time 6 months 3 weeks (www.nature.com)
Removing a certain type of retinal cell from lab mice doesn't make them go blind, but it does shake up their body clocks; they quickly slip into a 23.5 hour cycle--the same as unaltered mice in total darkness. They also lost their ability to regulate pupil size, but not their other visual abilities, such as judging how far to jump to make it across a gap. This suggests that these melanopsin-expressing retinal ganglion cells (mRGCs) concern the detection of light, not the processing of visual information.
What I'm curious about now is whether blind humans do or do not have this problem
Molecular biology of sleep apnea could lead to new treatments
Sue Wu submitted, created time 9 months 2 weeks (www.physorg.com)
Researchers at the University of Pennsylvania School of Medicine have provided, for the first time, a detailed look at the molecular pathways underlying sleep apnea, which affects more than twelve million Americans, according to the National Institutes of Health.
Sleep apnea is a condition characterized by temporary breathing interruptions during sleep, in which disruptions can occur dozens or even hundreds of times a night.
Consequences of sleep deprivation can add up
jane2007 submitted, created time 10 months 2 days (www.bcm.edu)
Depriving yourself of sleep can have a detrimental effect on your overall health. Research shows that several body functions are disturbed when you're not getting enough sleep. This ranges from neuropsychiatric disruptions to general cardiovascular function.
Lack of Deep Sleep Raises Diabetes Risk
Sue Wu submitted, created time 1 year 4 days (health.usnews.com)
THURSDAY, Jan. 3 (HealthDay News) -- Failing to sleep deeply for just three nights running has the same negative effect on the body's ability to manage insulin as gaining 20 to 30 pounds, diabetes researchers report.
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