August 25th, 2014
05:51 PM ET
Have you ever answered the phone in the morning to discover it was actually your alarm clock going off, or had a conversation in the middle of the night and woken up the next day with no recollection of it?
A new study suggests you are not alone. Researchers found many of us have had a similar experience in our lifetime.
The study, out Monday in the journal Neurology, says one in every seven people suffer from sleep "drunkenness" disorder, also called confusional arousal.
Confusional arousal is when a person wakes up and remains in a confused state for a certain period of time before either going back to sleep or fully waking up.
May 6th, 2014
03:34 PM ET
Current and expectant parents may be interested a few of the many studies that have been released in recent days as researchers gathered for the annual meeting of the Pediatric Academic Societies, the largest international meeting focused on research in children's health. The meeting, in Vancouver, British Columbia, ends Tuesday.
Here are some of the findings presented:
Not all parents are putting their babies 'back to sleep'
Since the early 1990's, the American Academy of Pediatrics has been recommending parents put their babies on their backs when they sleep to reduce the risk of Sudden Infant Death Syndrome (SIDS). While the number of SIDS deaths has gone down, the CDC reports more than 2000 infants under the age of 1 died in 2010 as a result of SIDS.
However, a new study finds that the word hasn't gotten out to everyone that babies should sleep on their backs. Researchers presented their data on Saturday. They found that two-thirds of full-term babies in the United States sleep on their backs and less than half of preemies are put in what's officially called the supine sleep position (on the back). FULL POST
July 26th, 2013
09:14 AM ET
You don't have to be a werewolf to feel restless when the full moon rises.
A new study in the journal Current Biology suggests that people tend to get lower quality sleep around the time of full moons, snoozing an average of 20 minutes less than they do during a new moon.
"If you ask people, at least in Switzerland, about 40% report feeling the moon during sleep, or they blame the full moon for bad sleep," said lead study author Christian Cajochen of the Psychiatric Hospital of the University of Basel in Switzerland.
That's why he and his colleagues decided to investigate.
January 4th, 2013
03:55 PM ET
Most of us are familiar with the dangers of drunken driving, but drowsy driving can be just as deadly. Studies estimate 15% to 33% of fatal crashes involve tired drivers, according to a new report from the Centers for Disease Control and Prevention.
Being sleep-deprived slows our reaction time, said Dr. Michael Howell, a sleep expert with the University of Minnesota. That can mean hitting something we might otherwise avoid, like a child on a bicycle who suddenly veers off the sidewalk.
We're also more impulsive when we're tired, Howell said. It's like our brains revert to being teenagers. "We respond to things without thinking them through," he says. "... Road rage happens because people are sleep deprived."
The CDC report analyzed data from a 2009-2010 national behavioral telephone survey of more than 147,000 respondents. Approximately 4.2% of those surveyed reported having fallen asleep while driving at least once during the last month. That’s one out of every 24 people.
October 17th, 2012
09:32 AM ET
Everyone has had one of those days where a night of choppy or short sleep leads into a morning of mental haze. New research presented at the Neuroscience 2012 conference suggests that sleep deprivation might be worse for you than you think.
For starters, sleepiness in the elderly could be an indication of Alzheimer's risk, says Andrew Ward, researcher at Massachusetts General Hospital.
Ward and colleagues did a study involving 84 elderly adults without memory problems, ranging from age 66 to 87. Researchers gave them a questionnaire about how likely they were to fall asleep during various daily activities, as a way to measure sleepiness. They also measured brain activity using functional magnetic resonance imaging (fMRI).
October 15th, 2012
12:02 AM ET
Sleepy school children make crabby classmates, while students who get plenty of sleep are better behaved, according to a new study published this week in the journal Pediatrics.
"Extending sleep opens the door to an effective, feasible way to improve children's health and performance," says study author Reut Gruber, director of the Attention Behavior and Sleep Lab at the Douglas Research Center in Quebec, Canada.
Gruber and his colleagues wanted to find out if the behavior of elementary school children was affected by how much sleep they got. The researchers, with the permission of parents, enrolled 34 students ages 7 to 11 in the study. These were healthy kids who didn't have sleep problems or behavior or academic issues.
October 1st, 2012
12:20 PM ET
Lack of quality sleep for adults may negatively impact heart health. Evidence now suggests that sleep problems during adolescence may increase health risks as well.
The research appeared Monday in the Canadian Medical Association Journal.
"When most people think about cardiovascular risk factors and risk behaviors, they don't necessarily think of sleep," said Dr. Brian McCrindle, senior author and cardiologist at SickKids in Toronto, Ontario. "This study ... shows a clear association between sleep disturbance (in adolescents) and a greater likelihood of having high cholesterol, high blood pressure and being overweight or obese." FULL POST
August 13th, 2012
03:28 PM ET
Everyone snores, even children. But if your little ones snore often and loudly, doctors say they may face other problems, such as hyperactivity, inattention and depression.
Researchers at the Cincinnati Children’s Hospital Medical Center studied 249 children, surveying their mothers about their youngsters’ sleeping habits. The study found children who snored loudly at least twice a week at the ages of 2 and 3 had more behavioral problems than children who didn’t snore, or who snored at 2 or 3 but not at both ages.
"The strongest predictors of persistent snoring were lower socioeconomic status and the absence or shorter duration of breast-feeding," says Dr. Dean Beebe, director of the hospital's neuropsychology program. "This would suggest that doctors routinely screen for and track snoring, especially in children from poorer families, and refer loudly-snoring children for follow-up care.
"Failing to screen, or taking a 'wait and see' approach on snoring, could make preschool behavior problems worse," he says. "The findings also support the encouragement and facilitation of infant breast-feeding."
August 6th, 2012
08:48 AM ET
Any parent with a child old enough to speak has no doubt endured many sleepless nights as the result of bad dreams. Sometimes there’s a monster hiding in the closet. Other times there are bugs crawling underneath the bed, or a witch lurking in the hallway.
Countless observational studies have reported an association between media and sleep problems in children. But a new study published Monday in the American Academy of Pediatrics now purports a causal relationship between violent or inappropriate media and poor sleep.
The study’s authors analyzed more than 500 children aged 3 to 5, their media viewing habits and their quality of sleep. The results show that replacing violent content with age-appropriate and educational alternatives can indeed lead to improved down time.
June 27th, 2012
05:13 PM ET
If someone you know kicks and punches you while they are sleeping, it may be because they have something called REM sleep behavior disorder or RBD, an extremely rare sleep disorder that affects an estimated 0.5% of adults worldwide.
Now researchers say they have identified some of the risk factors that contribute to someone getting RBD, which they believe can be a precursor to neurodegenerative diseases like Parkinson's. Over half of people with RBD develop a neurodegenerative disease, according to the American Academy of Neurology.
When people without this disorder are in REM sleep (the short period of time when you actually dream), their muscles are usually in a state of paralysis (atonia), according to the Cleveland Clinic. But people with RBD move their body or limbs while dreaming. and they could be acting out what they are dreaming. People with RBD are in danger of harming sleep partners as they act out.
About this blog
Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.