Cooling Cap Could Provide Insomnia Relief

There is no easy cure for insomnia. Sleeping pills appear to be a quick fix, but the potential for psychological attachment and rebound insomnia make medication for insomnia a solution for short-term problems only. Alternatively, you can seek cognitive behavioral therapy to help eliminate the harmful thoughts and bad habits that promote extended periods of insomnia. This solution is very effective but also time-consuming and requires effort and dedication.

New research presented at SLEEP 2011, the 25th Anniversary Meeting of the Associated Professional Sleep Societies LLC (APSS), suggests another treatment choice for insomnia may be on the horizon. The potential treatment would use a cooling cap that would lower your brain temperature to help you fall asleep.

Normally, a reduction in brain metabolism occurs as you fall asleep. However, during insomnia, the brain metabolism increases, keeping you awake. The cap helps reduce metabolic activity by cooling the front half of the brain.

The study involved 24 people. Half of the participants had insomnia. Each was subjected to several overnight sleep studies while wearing the cooling cap. The settings for the cooling cap differed each night, ranging from maximum amounts of water cooling to not wearing the cap at all.

Results show patients who wore the cooling cap set to its maximum level slept nearly as well as the subjects who didn’t have insomnia. These findings suggest the device could be a new promising therapy for insomnia sometime in the future. The treatment is still a long ways off; more studies will need to be conducted before the device can hit the marketplace.

Evening Screen Time Negatively Affects Kids' Sleep

Many young children have a problem going to sleep when it is their bed time. A recent study in the journal Pediatrics found that children between the ages of 3 and 5 had trouble sleeping if they had screen time after 7 p.m. Screen time includes television, video games or the computer. The amount of violent content in the program or game appears to be a contributing factor.

According to the study, about 20 percent of the 112 children involved had sleep problems almost every day of the week. Their issues included difficulty falling asleep, waking up during the night, nightmares and being sleepy during the day. The children who watched violent television at night had the most sleep problems.

A hundred children averaged a half hour of nighttime television, and 28 percent of the group had difficulty sleeping. When it came to violent television, 60 of the children averaged about an hour daily. About 37 percent had trouble sleeping. Television is often a stimulant to small children. Evening viewing may lead to increased alertness, and prevent them from winding down for bedtime. The findings demonstrate the importance that parents monitor the amount of television young children watch so they meet their sleep needs.

In an interview with the Associated Press, Dr. Marc Weissbluth a sleep disorders specialist at Chicago's Children's Memorial Hospital, said children get ready for sleep with nighttime rituals that communicate that it is time for rest. Many families mistakenly believe that watching television helps their children go sleep, so they put televisions in their children’s room. Weissbluth suggests bedtime stories or cuddling with parents as healthier alternatives to television.

The findings are consistent with another study on bedtime routines published in the May 2009 issue of SLEEP. The study found that a healthy bedtime routine improves the sleep of infants and toddlers.

Image by Sean Dreilinger

Mid-Life Sleep Changes May Accelerate Cognitive Decline

New research published in the journal SLEEP
shows that middle-aged adults who have negative changes in sleep duration may experience a decline in cognitive function comparable to four to seven years of aging. The findings suggest that poor sleep can accelerate the aging process and lead to dementia at an earlier age.

The study involved more than 5,400 London-based public employees ages 45 to 69. The researchers used a series of questionnaires and tests to examine the participants’ sleep habits and cognitive function over a span of approximately five years.

Results show that the study participants who began sleeping less than six hours per night scored lower on tests for cognitive reasoning, vocabulary and overall cognitive function.

People who moved to sleeping an unusually long amount of hours – more than eight per night – had an even worse outcome. Long-sleepers had lower scores on all of the cognitive function tests except for short-term verbal memory.

The reason why long-sleepers had a worse cognitive outcome is unknown because the study relied on questionnaires to determine sleep length. It’s possible that the subjects who reported more than eight hours had poor quality of sleep due to frequent wakings.

Sleep apnea has been linked to a cognitive decline that is often mistaken for dementia. People with sleep apnea may wake hundreds of times per night without even knowing it. As a result, they may feel tired and “foggy-headed” the next day. Common treatments such as CPAP can reverse the brain tissue damage caused by sleep apnea and reverse cognitive impairment.

A small decline in memory is a normal part of the aging process and is common in much older adults. As the study shows, when found in middle-aged adults, memory problems and overall cognitive decline can be a red flag for sleep apnea or unhealthy sleep habits.

Invest in your long-term health by making six to eight hours per night a priority. If you are still fatigued most mornings you may want to consult a sleep specialist and get tested for sleep apnea or other sleep disorders.

Napping Neurons Impair Performance in the Sleep-Deprived

A new study explains why sleep deprivation makes us irritable and impairs our ability to think clearly and make decisions. A team of sleep researchers in Wisconsin and Italy have discovered that parts of your brain may be nodding off while you remain awake. The study was conducted on lab rats, but the findings likely apply to humans. An EEG was used to measure the brain waves of rats as they were kept awake four hours past their usual bedtimes.

Readings show that local populations of neurons in the brain’s cortex went silent in a seemingly random pattern as the rats remained awake. The brain patterns in these select neurons resembled slow wave or non-REM sleep. The rats’ overall EEG readings as well as their behavioral appeared no different than well-rested rats.

Researchers did notice that the rats performed progressively worse at a task that involved locating a sugar pellet. If neurons in the motor cortex switched off as the rats reached for the pellet, they were about 37 percent more likely to fail the task.

The authors of the study caution that the rats were in a state that was different than microsleeps, or very brief episodes of sleep in a sleep-deprived but otherwise awake person.

Early School Start Times Endanger Teen Drivers, Study Finds

Teens as a group are notoriously bad drivers, with the highest annual accident and traffic violation rate of any age group in the United States. Parents have good reason to fear for the worst every time their child gets behind the wheel: auto accidents are the leading cause of death for America’s teens.

A recent study in the Journal of Clinical Sleep Medicine is directing some of the blame on schools for creating dangerous driving conditions for teens. The study found that accident rates are 41 percent higher when high school classes begin before 7:30 a.m.

The study compared teen accident rates at two demographically similar neighboring communities in southeast Virginia: Chesapeake and Virginia Beach.

Accident data from 2008 provided by the Virginia Department of Motor Vehicles showed that there were 65.8 auto crashes for every 1,000 teen drivers in Virginia Beach compared to 46.6 for Chesapeake.

The only significant difference, according to the authors, was school start times. Classes started at 7:20 a.m. in Virginia Beach. Students in Chesapeake were able to sleep in an extra hour and twenty minutes because of the 8:40 a.m. start time.

The American Academy of Sleep Medicine reports that the average teen needs more than nine hours of sleep per night. Falling asleep early can be difficult for teens because of natural night-owl tendencies and distractions such as smart phones and video games. As a result, teens often fail to get enough sleep and may drive to school with severe sleep deprivation.

Pushing forward start times for high school students will help them get more sleep, and as a result, make the roads safer. School districts across the United States have taken notice and have moved the opening high school bell to 8 a.m. or later.

Learn more about the sleep habits of teenagers.

Image by Carlos Lei