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Sleep deprivation doubles risks of obesity in both children and adults
July 13, 2006Research by Warwick Medical School at the University of Warwick has found that sleep deprivation is associated with an almost a two-fold increased risk of being obese for both children and adults.
Early results of a study by Professor Francesco Cappuccio of the University of Warwick's Warwick Medical School were presented to the International AC21 Research Festival hosted this month by the University of Warwick.
The research reviewed current evidence in over 28,000 children and 15,000 adults. For both groups Professor Cappuccio found that shorter sleep duration is associated with almost a two-fold increased risk of being obese.
The research also suggests that those who sleep less have a greater increase in body mass index and waist circumference over time and a greater chance of becoming obese over time.
Professor Cappuccio says:
"The 'epidemic' of obesity is paralleled by a 'silent epidemic' of reduced sleep duration with short sleep duration linked to increased risk of obesity both in adults and in children.These trends are detectable in adults as well as in children as young as 5 years."
Professor Cappuccio points out that short sleep duration may lead to obesity through an increase of appetite via hormonal changes caused by the sleep deprivation. Lack of sleep produces Ghrelin which, among other effects, stimulates appetite and creates less leptin which, among other effects, suppresses appetite. However he says more research is needed to understand the mechanisms by which short sleep is linked to chronic conditions of affluent societies, such as obesity, diabetes and hypertension.
Francesco Branca, the Regional Adviser for nutrition and food security in the World Health organisation (WHO) Regional Office for Europe said:
"This is an interesting piece of research putting together different lifestyle aspects with food choices. We need more research on the obese environment—the integration between medical research and socio-political research is something we should be exploring more."
For a podcast by Professor Cappuccio on sleep which covers this new research go to
http://www2.warwick.ac.uk/newsandevents/audio/?podcastItem=sleep.mp3
Broadcast quality video footage on this story is available from Research TV
http://www.research-tv.com/
to view a web version of this footage go direct to the link below and click
the connection speed you want under the eye
http://www.research-tv.com/stories/health/sleep/
The University of Warwick
The research also suggests that those who sleep less have a greater increase in body mass index and waist circumference over time and a greater chance of becoming obese over time.
Professor Cappuccio says:
"The 'epidemic' of obesity is paralleled by a 'silent epidemic' of reduced sleep duration with short sleep duration linked to increased risk of obesity both in adults and in children.These trends are detectable in adults as well as in children as young as 5 years."
Professor Cappuccio points out that short sleep duration may lead to obesity through an increase of appetite via hormonal changes caused by the sleep deprivation. Lack of sleep produces Ghrelin which, among other effects, stimulates appetite and creates less leptin which, among other effects, suppresses appetite. However he says more research is needed to understand the mechanisms by which short sleep is linked to chronic conditions of affluent societies, such as obesity, diabetes and hypertension.
Francesco Branca, the Regional Adviser for nutrition and food security in the World Health organisation (WHO) Regional Office for Europe said:
"This is an interesting piece of research putting together different lifestyle aspects with food choices. We need more research on the obese environment—the integration between medical research and socio-political research is something we should be exploring more."
For a podcast by Professor Cappuccio on sleep which covers this new research go to
http://www2.warwick.ac.uk/newsandevents/audio/?podcastItem=sleep.mp3
Broadcast quality video footage on this story is available from Research TV
http://www.research-tv.com/
to view a web version of this footage go direct to the link below and click
the connection speed you want under the eye
http://www.research-tv.com/stories/health/sleep/
The University of Warwick
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Extremes in sleep duration are related to increases in abdominal fat in minority young adults
A study in the March 1 issue of the journal SLEEP shows that African-American and Hispanic young adults with short or long sleep durations had greater increases in belly fat over a five-year period compared with those who reported sleeping six to seven hours a night.
A midday nap markedly boosts the brain's learning capacity
If you see a student dozing in the library or a co-worker catching 40 winks in her cubicle, don't roll your eyes. New research from the University of California, Berkeley, shows that an hour's nap can dramatically boost and restore your brain power.
Sleep problems and sleepiness increase the risk of motor vehicle accidents in adolescents
Results indicate that adolescent drivers were twice as likely to have had a crash if they experienced sleepiness while driving (adjusted odds ratio = 2.1) or reported having bad sleep (OR = 1.9).
Institute of Medicine recommends stricter resident duty hour regulations to prevent medical errors
At the request of the House Committee on Energy and Commerce as part of an investigation into preventable medical errors, the Institute of Medicine (IOM) has issued a report recommending further restrictions regarding duty hours for resident physicians and other actions to reduce resident fatigue and ensure patient safety.
Study links restless leg syndrome with erectile dysfunction in older men
A study in the Jan. 1 issue of the journal Sleep shows that erectile dysfunction was more common in older men with restless leg syndrome (RLS) than in those without RLS, and the magnitude of this association increased with a higher frequency of RLS symptoms.
Earlier bedtimes may help protect adolescents against depression and suicidal thoughts
A study in the Jan. 1 issue of the journal Sleep found that adolescents with bedtimes that were set earlier by parents were significantly less likely to suffer from depression and to think about committing suicide, suggesting that earlier bedtimes could have a protective effect by lengthening sleep duration and increasing the likelihood of getting enough sleep.
UR Study Reveals Chemo's Toxicity to Brain, Possible Treatment
Researchers have developed a novel animal model showing that four commonly used chemotherapy drugs disrupt the birth of new brain cells, and that the condition could be partially reversed with the growth factor IGF-1.
Sleep changes predict the onset of physical changes associated with puberty
A study in the Dec.1 issue of the journal Sleep suggests that changes in children's sleep patterns that typically occur between the ages of 11 and 12 years are evident before the physical changes associated with the onset of puberty.
Hebrew University, US scientists find clue to mystery of biological clock
How does our biological system know that it is supposed to operate on a 24-hour cycle? Scientists at the Hebrew University of Jerusalem have discovered that a tiny molecule holds the clue to the mystery.
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