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Tag: "sleep" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...reased risk of having children who will experience sleep problems in infancy and toddlerhood, finds a study...it may carry even more value for babies. For them, sleep ranks as one of the most highly regarded indexes of healthy development, and plays a critical role i...

Scratch no more: Gene for itch sensation discovered

...c itching can be very disruptive, interfering with sleep or giving rise to scratching that leads to scarring. Effective treatment options for itchy patients are limited. Historically, scientists regarded itch as just a less intense version of the pain sensation. As a result, research on itching has been s...

Snoring in children might be an allergic type disease

...r to identify potentially more serious obstructive sleep apnoea.” ...

Longer treatment benefits sleep apnea patients

WHAT: Adults with obstructive sleep apnea benefit significantly from longer nightly us... alertness and functioning. Researchers at seven sleep centers in the United States and Canada studied 149 adults with sleep apnea to determine how long th...

College students who pull 'all-nighters' and get no sleep more likely to have a lower GPA

..."pulling all-nighters", or a single night of total sleep deprivation, a practice associated with lower grad...lly inadequate, irregular and of poor quality. As sleep quality and quantity decrease, academic performance worsens. The data collected in this study indic...

Fat fish put obesity on the hook

...ease, stroke, gallbladder disease, osteoarthritis, sleep apnea and respiratory problems, and some types of cancer. ...

Male circumcision overstated as prevention tool against AIDS

....1%. If these 7% of infected prostitutes in Africa sleep with five men in a week that means they are subjecting 35% of the country’s male population to the virus weekly. The virus is not easy to transmit heterosexually, b ut over time with multiple exposures, infection is inevitable. These men then act as ...

Chronic fatigue syndrome impairs a person's slow wave activity during sleep

... electroencephalograph (EEG) activity and impaired sleep regulation. A study published in the May 1st issu...ith a blunted slow wave activity (SWA) response to sleep challenge, suggesting an impairment of the basic sleep drive and homeostatic response. The study, a...

Slowing the racing heart

... or decrease the blood flow to the body as we eat, sleep or exercise. "Disturbances of pacemaker control are common in heart diseases. When the heartbeat becomes non-rhythmic and chaotic, it can result in fatal arrhythmias and stroke," said R. John Solaro, UIC distinguished university professor and pri...

Sleepless for science: Flies show link between sleep, immune system in Stanford study

Go a few nights without enough sleep and you're more likely to get sick, but scientists have no real explanation for how sleep is related to the immune system. Now, researchers at the Stanford University School of Medicine are ...

Sleep quantity affects morning testosterone levels in older men

...vels of healthy men decline as they get older. As sleep quality and quantity typically decrease with age, objectively measured differences in the amount of sleep a healthy older man gets can affect his level of testosterone in the morning, according to a study p...

Out-of-body experiences may be caused by arousal system disturbances in brain

...es different states of consciousness including REM sleep and wakefulness, may be the cause for these types ...und it surprising that out-of-body experience with sleep transition seemed very much like out-of-body experience during near death," Nelson said. For thei...

Individual differences in a clock gene predict decline of performance during sleep deprivation

... are known to differ markedly in their response to sleep deprivation, but the biological underpinnings of t...me people particularly sensitive to the effects of sleep deprivation. The findings, reported by Antoine Viola, Derk-Jan Dijk, and colleagues at the Universit...

Children who sleep more weigh less

Children who sleep more tend to weigh less than children who sleep less, and they are less likely than their counterparts to be overweight five years later. That’s one...

Keeping the body in sync -- The stability of cellular clocks

...sociation studies in families affected by advanced sleep phase syndrome. Circadian rhythms are cyclical changes in physiology, gene expression, and behavior that run on a cycle of approximately one day, even in conditions of constant light or darkness. Peripheral organs in the body have their own cellul...

'Night owls' report more insomnia-related symptoms

...heir time in bed and being able to gain more total sleep time, according to a study published in the April ...e made on self-report measures of nocturnal sleep, sleep period variability and waking correlates and consequences of insomnia. Compared to the morning an...

Gene that makes people 'early to bed and early to rise' demystified

...y to rise," a condition known as familial advanced sleep phase syndrome (FASPS), offered one of the first glimpses into the genetic basis of sleep in humans. Now, researchers report in the Jan. 12, 2007 issue of the journal Cell, published by Cell...

Scripps research team discovers a chemical pathway that causes mice to overeat and gain weight

...eceptor tend to be more active during their normal sleep cycle and to eat more. In the study, this led to weight increases of up to 30 percent relative to mice with the receptors. The EP3 receptor is one of four types of receptors for prostaglandin E2 (PGE2), the most important inflammatory mediator that...

Sleep disturbances affect classroom performance

As a night of bad sleep can have an adverse effect on an adult’s performan...icine (JCSM) finds that adolescents who experience sleep disturbances are more likely to receive bad grades in school. James F. Pagel, MD, of the University...

Sleep enforces the temporal sequence in memory

...The same research group now provides evidence that sleep not only strengthens the content of a memory but a...ards they slept, whereas in a control condition no sleep was allowed. Later, recall was tested by presenting one word and asking which one came before and wh...

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