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Showing posts with label sleep. Show all posts
Showing posts with label sleep. Show all posts

Saturday, 14 September 2013

It is Dangerous to Sleep With a Cell Phone Under Your Pillow

It is Dangerous to Sleep With a Cell Phone Under 

Your Pillow

Most experts agree with the warnings to avoid sleeping with 
a cell phone under your pillow.  
radio
The "under the pillow" 
angle of cell phone radiation
 is just a subset of a larger 
discussion on the topic of cell
 phone radiation in general. 
Though there is some evidence
 to support harmful effects of
 cell phone use on the brain‚ 
the jury is out on brain cancer
or brain tumors and cell phone use.
Nevertheless‚ most experts advise
 taking the safe route and limiting
 unnecessary extended exposure‚
 such as sleeping with a cell phone
 next to your head.
Ways to Reduce Cell Phone 
Radiation:-
While the debate rages‚ many
 people prefer to err on the side
 of caution and try to minimize 
their cell phone radiation exposure.
Such steps include:
Keeping cell phone several feet away while sleeping.
Using speaker instead of talking directly into the handset.
Text instead of talking.
Use headphones or Bluetooth connectors.
If you are using your phone at night for its clock or alarm features‚ consider putting it
 in "airplane mode" which suspends the phone's transmission functions.

Thursday, 12 September 2013

Sleep boosts brain cell numbers

Sleep boosts brain cell numbers

In contrast‚ the genes involved in cell death and stress 
responses were turned on when the mice were forced to 
stay awake.
radio
Scientists believe that
 they have discovered 
a new reason why we 
need to sleep it replenishes
 a type of brain cell.
Dr Chiara Cirelli and 
colleagues from the 
University of Wisconsin
 found that the production
 rate of the myelin making
 cells‚ immature 
oligodendrocytes‚ doubled
 as mice slept.
The increase was most marked during the type of sleep that is associated with 
dreaming - REM or rapid eye movement sleep - and was driven by genes.
In contrast‚ the genes involved in cell death and stress responses were turned on when the
 mice were forced to stay awake.
Dr Cirelli said that for a long time‚ sleep researchers focused on how the activity of nerve 
cells differs when animals are awake versus when they are asleep.

Monday, 9 September 2013

Sleep loss can make you fat: Study

Sleep loss can make you fat: Study

Researchers have long pointed to a correlation between a 
steep rise in obesity in industrialized nations and a decline in 
sleep duration.
radio
Scientists had found evidence
 that a lack of sleep causes 
changes in brain activity that 
lead to people feeling hungrier
 and craving more fattening
 foods.
Researchers have long pointed
 to a correlation between a
 steep rise in obesity in
 industrialized nations and a
 decline in sleep duration.
A causal link was suspected‚
 but science has not been able to explain the mechanism‚ until now.
A team from the University of California said they used MRI (magnetic resonance imaging)
 scans to spot changes in the brain activity of sleep-deprived test subjects.
Researchers said these findings provide an explanatory brain mechanism by which
 insufficient sleep may lead to the development/maintenance of obesity.