Sleep Disorders News -- ScienceDaily
New smart watch algorithms can help identify why you are sleeping poorly
New algorithms take advantage of multiple smart watch sensors to accurately monitor wearers' sleep patterns. As well as obtaining rich information on wearers' sleep, the software, called SleepGuard, can estimate sleep quality and provide users with practical advice to help them get a better night's snooze.
Kids' sleep may suffer from moms' tight work schedules
After studying the sleep habits of children from ages five to nine, researchers found that when mothers reported less flexibility in their work schedules, their children got less sleep. When they gained flexibility in their work schedules, their children slept more.
World's largest sleep study shows too much shut-eye can be bad for your brain
Preliminary results from the world's largest sleep study have shown that people who sleep on average between 7 to 8 hours per night performed better cognitively than those who slept less, or more, than this amount.
Out like a light: Researchers ID brain's 'sleep switch'
Scientists demonstrate in mice that that specific brain cells -- located in a region of the hypothalamus called the ventrolateral preoptic nucleus (VLPO) -- are in fact essential to normal sleep.
Day-time naps help us acquire information not consciously perceived, study finds
The age-old adage 'I'll sleep on it' has proven to be scientifically sound advice, according to a new study which measured changes in people's brain activity and responses before and after a nap. The findings support the advice which suggests that a period of sleep may help weighing up pros and cons or gain insight before making a challenging decision.
Insomnia therapy may slow or reverse cortical gray matter atrophy in fibromyalgia
Preliminary findings from a pilot study suggest that cognitive behavioral therapy for insomnia (CBT-I) may slow or even reverse the atrophy of cortical gray matter in patients who have co-morbid fibromyalgia.
How sleep deprivation hinders memory
Researchers have conducted the largest experimentally controlled study on sleep deprivation to date, revealing just how detrimental operating without sleep can be in everything from bakers adding too much salt to cookies to surgeons botching surgeries.
Insufficient sleep associated with risky behavior in teens
Researchers examined a national data sample of risk-taking behaviors and sleep duration self-reported by high school students over eight years and found an association between sleep duration and personal safety risk-taking actions.
Hidden health problems can appear up to two years after elective hip surgeries
Up to two years following elective, arthroscopic hip surgery, a substantial proportion of patients reported troubling new health issues ranging from sleep problems, to arthritis to cardiovascular disease.
New screening tool can improve the quality of life for epilepsy patients with sleep apnea
Researchers have developed a tool to help neurologists screen for obstructive sleep apnea in people with epilepsy whose seizures can be magnified by sleep disorders.
Limiting children's recreational screen time to less than two hours a day linked to better cognition, study finds
Limiting recreational screen time to less than two hours a day, and having sufficient sleep and physical activity is associated with improved cognition, compared with not meeting any recommendations, according to an observational study of more than 4,500 US children aged 8-11 years old.
Insomnia symptoms, overall health improve with online insomnia program
Treating insomnia with digital programs can improve insomnia symptoms, daytime functioning and overall health, a new study has found. A major limitation of insomnia treatments is the lack of providers to deliver CBT, but this study used an online platform that made it easily accessible to users. It also automated and tailored the treatment based on the user's sleep patterns.
How nature, nurture shape the sleeping brain
Some patterns of electrical activity generated by the brain during sleep are inherited, according to a study of teenage twins. Pinpointing the relative contributions of biology and experience to sleep neurophysiology could inform therapies for numerous psychiatric disorders in which alterations in brain activity during sleep can be detected.
Blood test for drowsy driving
Scientists have developed a blood test to tell whether you have skipped a night's sleep, bringing us a step closer to developing a test for driver sleepiness. The breakthrough could help police identify suspected drowsy drivers in road traffic accidents, or assist employers in assessing fitness for duty, such as in the aviation sector.
It's not just for kids -- even adults appear to benefit from a regular bedtime
Researchers found people with irregular sleep patterns weighed more, had higher blood sugar, higher blood pressure, and a higher projected risk of having a heart attack or stroke within 10 years than those who slept and woke at the same times every day.
Sleep deprived people more likely to have car crashes
A new study indicates that people who have slept for fewer than seven of the past 24 hours have higher odds of being involved in and responsible for car crashes. The risk is greatest for drivers who have slept fewer than four hours.
More than half of parents of sleep-deprived teens blame electronics
Fifty-six percent of parents of teens who have sleep troubles believe the use of electronics is hurting their child's shut-eye.
One in four older adults prescribed a benzodiazepine goes on to risky long-term use
They may start as well-intentioned efforts to calm anxiety, improve sleep or ease depression. But prescriptions for sedatives known as benzodiazepines may lead to long-term use among one in four older adults who receive them, according to new research. That's despite warnings against long-term use of these drugs, especially among older people, because they can increase the risk of car crashes, falls and broken hips, as well as causing other side effects.
More daytime sleepiness, more Alzheimer's risk?
Analysis of data captured during a long-term study of aging adults shows that those who report being very sleepy during the day were nearly three times more likely than those who didn't to have brain deposits of beta amyloid, a protein that's a hallmark for Alzheimer's disease, years later.
First-ever guidelines for detecting, treating perimenopausal depression
Clinicians and scientists have published the first-ever guidelines for the evaluation and treatment of perimenopausal depression simultaneously in the journal Menopause and the Journal of Women's Health.
Marmosets serve as an effective model for non-motor symptoms of Parkinson's disease
Small, New World monkeys called marmosets can mimic the sleep disturbances, changes in circadian rhythm, and cognitive impairment people with Parkinson's disease develop, according to a new study.
Losing just six hours of sleep could increase diabetes risk, study finds
Losing a single night's sleep may affect the liver's ability to produce glucose and process insulin, increasing the risk of metabolic diseases such as hepatic steatosis (fatty liver) and type 2 diabetes.
Positional sleep therapy during pregnancy may promote maternal and fetal health
A new study suggests that an intervention to reduce supine sleep in late pregnancy may promote maternal and fetal health.
Restless legs syndrome brain stimulation study supports motor cortex 'excitability' as a cause
Researchers report new insights into brain centers involved in restless legs syndrome and disturbed sleep.
Listening to yoga music at bedtime is good for the heart
Listening to yoga music at bedtime is good for the heart, according to new research.
Short and fragmented sleep linked to hardened arteries
Results of a new study shows that sleeping less than six hours or waking up several times in the night is associated with an increased risk of asymptomatic atherosclerosis, which silently hardens and narrows the arteries.
Sleeping five hours or less a night associated with doubled risk of cardiovascular disease
New research finds that middle-aged men who sleep five hours or less per night have twice the risk of developing a major cardiovascular event during the following two decades than men who sleep seven to eight hours.
Finding the sweet spot of a good night's sleep: Not too long and not too short
Researchers have found a sweet spot of six to eight hours sleep a night is most beneficial for heart health. More or less is detrimental.
How sleep loss may contribute to adverse weight gain
One night of sleep loss has a tissue-specific impact on the regulation of gene expression and metabolism in humans, according to researchers. This may explain how shift work and chronic sleep loss impairs our metabolism and adversely affects our body composition.
Research finds naps plus sleep may enhance emotional memory in early childhood
Neuroscientists report for the first time evidence that naps and overnight sleep may work together to benefit memory in early childhood.
Sleep disorder linked with abnormal lipid levels
New research reveals a potential link between obstructive sleep apnea (OSA) and high levels of cholesterol and triglycerides.
Poor sleep and type 2 diabetes means slower wound healing
People with Type 2 diabetes who don't sleep well could need more time to heal their wounds, according to a new study.
Poor sleep triggers viral loneliness and social rejection
In a study of sleep-deprived versus well-rested individuals, researchers found that the brains of those lacking sufficient sleep exhibited heightened activity in areas that deal with perceived human threats and a shutdown of areas that encourage social interaction. People shown videos of sleep-deprived individuals felt more alienated, suggesting that antisocial feelings are contagious. This is the first study to show a two-way relationship between sleep loss and becoming socially isolated.
Evening preference, lack of sleep associated with higher BMI in people with prediabetes
People with prediabetes who go to bed later, eat meals later and are more active and alert later in the day -- those who have an 'evening preference' -- have higher body mass indices compared with people with prediabetes who do things earlier in the day, or exhibit morning preference.
Why the brain system needs sleep
Sleep is essential for brain functionality and overall health but understanding how sleep delivers its beneficial effects remains largely unknown. Sleep researchers are exploring new and unbiased approaches that can take sleep to a systems level. In one such approach, referred to as 'systems genetics', inferences about biological phenomena can be made by linking together several levels of information from DNA to phenotype via gene expression, proteins and metabolism at the level of a population. Systems genetics offers a global and interconnected view of biological phenomena and is therefore considered critical towards predicting disease susceptibility.
Better sleep linked with family tree strength
The question of why we sleep has been a longstanding subject of debate, with some theories suggesting that slumber provides respite for the brain, which allows it to filter out insignificant neural connections, build new ones, strengthen memories and even repair itself. However, new research has used mathematical approaches to tackle the adaptive significance of sleep, and the findings suggest that sleep has another purpose -- boosting our 'fitness' and future family line reproductive success.
Nine out of 10 people caring for a family member with dementia don't get enough sleep
More than 90 percent of people caring for a family member with dementia experience poor sleep, according to new research.
First ever study of serious case reviews of sudden unexpected infant deaths conducted
For the first time in England a study has been conducted of official investigations of unexpected infant deaths. The researchers aimed to develop a detailed understanding of the circumstances of sudden unexpected death in infancy (SUDI) cases subject to serious case review.
Overnight brain stimulation improves memory
New research in humans demonstrates the potential to improve memory with a non-invasive brain stimulation technique delivered during sleep. The results come from a project that aims to better understand the process of memory consolidation, which could translate into improved memory function in both healthy and patient populations.
A peek into the interplay between sleep and wakefulness
The ventrolateral preoptic nucleus (VLPO) in the brain plays a critical role in the initiation and maintenance of sleep, while the lateral posterior part of the hypothalamus contains neuronal populations implicated in maintenance of arousal. Now, a new study reveals that these arousal-related neurons are heavily innervated by GABAergic neurons in the preoptic area including the VLPO. The work provides important information to understand the mechanisms that control animals' sleep/wakefulness states.
Early supper associated with lower risk of breast and prostate cancer
People who have their evening meal before 9 p.m. or wait at least two hours before going to sleep have lower risk of breast and prostate cancer.
Antioxidant benefits of sleep
Scientists found that short-sleeping fruit fly mutants shared the common defect of sensitivity to acute oxidative stress, and thus that sleep supports antioxidant processes.
New gears in your sleep clock
Researchers find that a key circadian clock controlling kinase, CK1D -- controlling the stability of PER2 -- has two forms, one that stabilizes PER2 and one that destabilizes it.
Living in areas with less sun may increase your risk of OCD
Living at higher latitudes, where there is also less sunlight, could result in a higher prevalence rate of obsessive compulsive disorder (OCD), according to new research.
Babies introduced to solids early slept longer and woke less frequently, study finds
A study has found that babies introduced to solid foods early, slept longer, woke less frequently at night and suffered fewer serious sleep problems, than those exclusively breastfed.
Shining new light on the pineal gland
Biologists have identified a gene controlling left-right asymmetry in the brain and sleep-wake cycles.
Sleep disorder linked with changes to brain structure typical of dementia
Obstructive sleep apnea is associated with changes to the structure of the brain that are also seen in the early stages of dementia, according to a new study.
Change in brain cells linked to opiate addiction, narcolepsy
Two discoveries -- one in the brains of people with heroin addiction and the other in the brains of sleepy mice -- shed light on chemical messengers in the brain that regulate sleep and addiction.
Poor sleep quality linked to atrial fibrillation
Poor sleep quality appears to be an important risk factor for atrial fibrillation, report scientists in the first study of its kind to demonstrate a relationship between poor sleep quality independent of sleep apnea and a higher risk of atrial fibrillation (AF).
Floppy eyelids may be sign of sleep apnea
A new study is providing further evidence that floppy eyelids may be a sign of sleep apnea. The study found that 53 percent of sleep apnea patients had upper eyelids that were lax and rubbery.
How a single binge drinking episode affects gene that regulates sleep
New findings explain how a single episode of binge drinking can affect the gene that regulates sleep, leading to sleep disruption in mice. The finding may shed light on how sleep problems can contribute to alcoholism in humans.
Brain changes linked to sleep need
We've all experienced going to bed tired and waking up refreshed, yet how that happens at the molecular level remains a mystery. An international study sheds new light on the biochemistry of sleep need in the brain.
Early birds less prone to depression
A study of 32,000 women found that those with an early chronotype, or sleep-wake preference, were significantly less likely to develop depression.
Scientists identify enzyme responsible for vascular damage caused by aircraft noise
In a recent study, scientists have identified an enzyme responsible for aircraft-related vascular damage. The researchers were also able to show that night-time noise has a particularly harmful effect and thus demand that night-time sleep be protected from noise.
Sleeping too much or not enough may have bad effects on health
Fewer than six and more than ten hours of sleep per day are associated with metabolic syndrome and its individual components, according to a new study.
Sleep problems in Parkinson's disease: Can we fix them?
Researchers have uncovered why people with a hereditary form of Parkinson's disease suffer from sleep disturbances. The molecular mechanisms uncovered in fruit flies and human stem cells also point to candidate targets for the development of new treatments.
Study of sleeping fur seals provides insight into the function of REM sleep
All land mammals and birds have two types of sleep: rapid eye movement (REM) and non-REM (also called slow-wave sleep). Earlier evidence had suggested that REM sleep is essential for physical and mental well-being and learning, but the underlying function of REM sleep has been a mystery. New insight into the function of REM sleep, based on studies of an unlikely animal: the fur seal.
Preterm newborns sleep better in NICU while hearing their mother's voice
Hearing a recording of their mother's voice may help neonates maintain sleep while in the neonatal intensive care unit (NICU), according to preliminary data from a new study.
Poor sleep linked to lower cognitive functioning in people with diabetes and prediabetes
A study reports that people with diabetes and prediabetes who have lower sleep efficiency -- a measure of how much time in bed is actually spent sleeping -- have poorer cognitive function than those with better sleep efficiency.
Teenage girls are more impacted by sleepiness than teen boys are
Preliminary results of a recent study show that teen girls reported a higher degree of interference of daytime sleepiness on multiple aspects of their school and personal activities than boys.
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