Sleep Disorders News -- ScienceDaily
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.
Optimal sleep linked to lower risks for dementia and early death
Short and long daily sleep duration were risk factors for dementia and premature death in a study of Japanese adults aged 60 years and older.
One in four Americans develop insomnia each year: 75 percent of those with insomnia recover
About 25 percent of Americans experience acute insomnia each year, but about 75 percent of these individuals recover without developing persistent poor sleep or chronic insomnia, according to a new study.
Lighting intervention improves sleep and mood for Alzheimer's patients
A tailored lighting intervention in nursing homes can positively impact sleep, mood and behavior for patients with Alzheimer's disease, according to preliminary findings from a new study.
Maternal depressive emotion associated with children's sleep problems
Maternal depressive mood during the prenatal and postnatal periods is related to child sleep disturbances, according to recent pilot data from a longitudinal cohort study in kindergarten children.
Light exposure during sleep may increase insulin resistance
According to preliminary results from a new study, nighttime light exposure during sleep may affect metabolic function. The aim of this study was to test the hypothesis that light exposure at night during sleep adversely impacts metabolic outcomes.
NFL teams play better during night games thanks to circadian advantages
Pilot data from a recent study suggest that NFL teams have better performance during night games versus afternoon games due to advantages from circadian rhythms.
Study links screen time to insomnia symptoms and depressive symptoms in adolescents
Preliminary results from a new study indicate that greater amounts of daily screen time are associated with more insomnia symptoms and shorter sleep duration among adolescents.
Short and long sleep durations lnked with excess heart age
Preliminary results from a new study show that excess heart age (EHA) appeared to be lowest among adults who reported sleeping seven hours per 24-hour period.
New algorithm determines ideal caffeine dosage and timing for alertness
According to a recent study, a newly developed algorithm may be the key to optimizing alertness with caffeine.
Inadequate sleep could cost countries billions
Inadequate sleep is a public health problem affecting more than one in three adults worldwide. A new study suggests that insufficient sleep could also have grave economic consequences.
Sleep paralysis and hallucinations are prevalent in student athletes
Pilot data from a recent study suggest that sleep paralysis and dream-like hallucinations as you are falling asleep or waking up are widespread in student athletes and are independently associated with symptoms of depression.
Why do some sleep-deprived people experience worse cognitive functioning than others?
The key to predicting how someone is affected by sleep loss may be found in microRNAs (miRNAs), according to a new study.
Sleep loss linked to nighttime snacking, junk food cravings, obesity, diabetes
Nighttime snacking and junk food cravings may contribute to unhealthy eating behaviors and represent a potential link between poor sleep and obesity.
Insomnia is a likely long-term side effect of stroke, study finds
Stroke patients experience sustained problems with insomnia potentially reducing their ability to relearn key skills and putting them at increased risk of depression, a new study finds.
Too little sleep in child­hood may have neg­at­ive ef­fects on cho­les­terol levels
Adequate sleep duration and sleep quality may support healthy lipid profile among children and youth, according to new research. In addition, earlier circadian preference in childhood may contribute positively to the future health of the child.
A key switch in biological clocks
An international team of researchers found that CK1 is the priming kinase that 'switches on' a key control point which plays an important role in regulating our biological clock.
Adolescents with hay fever have higher rates of anxiety and depression
A new article shows allergies can have serious, far-reaching consequences, especially on adolescent sufferers.
Bursts of brain activity linked to memory reactivation
Leading theories propose sleep presents an opportune time for important, new memories to become stabilized. And it's long been known which brain waves are produced during sleep. In a new study, researchers set out to better understand the brain mechanisms that secure memory storage.
Evening use of light-emitting tablets may disrupt healthy sleep
A new study reveals that evening use of light-emitting tablets can induce delays in desired bedtimes, suppress secretion of melatonin (the hormone that regulates sleep and wakefulness), and impair next-morning alertness.
Can weekend sleep make up for the detriments of sleep deprivation during the week?
In a recent study, short, but not long, weekend sleep was associated with an increased risk of early death in individuals under 65 years of age.
Sleep better, parent better: Study shows link between maternal sleep and permissive parenting
A new study looks at the link between maternal sleep and permissive parenting during late adolescence. Findings show that mothers who don't get enough sleep or who take longer falling asleep have a greater tendency to engage in permissive parenting -- parenting marked by lax or inconsistent discipline.
CPAP may reduce resting heart rate in prediabetic patients
Patients with prediabetes who also have obstructive sleep apnea (OSA) may improve their resting heart rate, an important measure of cardiovascular health, by using continuous positive airway pressure (CPAP) to treat their OSA, according to a randomized, controlled trial.
New findings explain how melatonin promotes sleep
Researchers have discovered how melatonin suppresses neurons in the brain that keeps you awake and alert. These findings could lead to new therapies for those who suffer from insomnia.
Consumer sleep technology is no substitute for medical evaluation
Consumer sleep technology must be cleared by the Food and Drug Administration (FDA) and rigorously tested if it is intended to diagnose or treat sleep disorders, according to a position statement from the American Academy of Sleep Medicine.
Snorers suffer from nerve and muscle damage in the palate
People who snore may have extensive tissue damage in the nerves and muscles of the soft palate. This can in turn create problems with swallowing and contribute to development of sleep apnea. Treatment strategies aimed at early intervention to stop snoring might have beneficial effects in healing or preventing development of sleep apnea.
Adversity early in life linked with more physical pain in adulthood
Experiencing trauma as a child may influence how much pain an individual feels in adulthood. Gaining insight about who feels more pain and why is important as issues like the opioid crisis continue to escalate.
To treat pain, you need to treat the patient
People in chronic pain are some of the most difficult patients to treat. Clinicians found that an in-depth questionnaire can help immensely.
Noise throws the heart out of rhythm
With an increasing level of noise, the incidence of atrial fibrillation also increases dramatically. Scientists found that the incidence of atrial fibrillation in subjects with extreme noise annoyance reactions increases to 23 percent, compared to just 15 percent without this environmental impact. Looking at the proportion of sources of extreme noise pollution, aircraft noise came first with 84 percent during the day and 69 percent during sleep.
Effects of night-time light on internal body clock
New research has illuminated the effects of night-time light exposure on internal body clock processes. This is important for helping those who have poor quality sleep, such as shift workers, and could help improve treatments for depression.
Napping can help tired teens' performance in school
Researchers have found a positive relationship between midday-napping and nighttime sleep. They believe it might be key to boosting neurocognitive function in early adolescents. The team examined adolescents in Jintan, China, measuring midday napping, nighttime sleep duration and sleep quality, and performance on multiple neurocognitive tasks. Habitual nappers (who napped more often) tended to have a better nighttime sleep.
New link between sleep arousals and body temperature may also be connected to SIDS
What is the origin of these arousals? Scientists have discovered that brief arousals are probably triggered by the intrinsic electrical noise from wake-promoting neurons (WPN) in the brain. Their research reveals a previously unrecognized neurophysiological mechanism that links sleep arousals with temperature regulation, and may also provide an important new link between temperature and Sudden Infant Death Syndrome (SIDS).
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