sleep disorders

TV again tied to poor sleep among kids

In another blow to kids’ pleas to watch more television before bed, a new study suggests increased TV time is linked to less sleep. What’s more, black, Latino and other minority children slept less when they had TV sets in their bedrooms.

“Inadequate sleep in childhood is associated with health outcomes, including attention problems, school performance and an increased risk of obesity,” Elizabeth Cespedes told Reuters Health. Cespedes is the study’s lead author from the Harvard School of Public Health in Boston.

“We wanted to know if television viewing may be associated with shorter sleep duration in children,” she said. For the new report, she and her colleagues used data from an existing study of mothers and children who lived in the Boston area. The study included 1,864 children who were born between 1999 and 2003. Mothers reported how much television their child watched at six months old and then every year until age seven.

Mothers also reported whether children slept with a television in their bedroom every year starting midway through the study.

The average time children slept each day decreased from about 12 hours at six months to about 10 hours at seven years, and total TV viewing increased from about one hour per day to 1.6 hours.

The proportion of children who slept with a TV in their bedroom increased from 17 percent to 23 percent between ages four and seven years, too. Children typically sleep less as they get older, the researchers noted. Still, each extra hour of TV watching added to their lifetime average was tied to a seven-minute decrease in daily sleep.

That association was stronger for boys than girls, according to findings published in Pediatrics. “I think in our case it’s possible that the content of the television watched may be different for boys than girls,” Cespedes said. “The content may be especially disruptive.”

She and her colleagues also found that sleeping with a TV in the bedroom was tied to 31 fewer minutes of sleep per day among racial and ethnic minority children. The effect of a TV in the bedroom was not as strong among white, non-Hispanic children.

Cespedes said it’s hard to know why minority children would be more affected by having a TV in the bedroom. “At all time points, racial and ethnic minority children in our study were sleeping a bit less and watching more television,” she said.

Dr. Heidi Connolly, a sleep specialist who was not involved with the new study, said the research is one of several recent papers that point toward a negative effect of TV on sleep.

“This doesn’t seem like very much, but if you think about it, seven minutes every night by the time you get to the end of the week you’re already a half hour short on sleep,” Connolly, from the University of Rochester Medicine’s Golisano Children’s Hospital in New York, said.

The American Academy of Pediatrics recommends against children younger than two years old watching any television. It also recommends limiting older children’s screen time to no more than one or two hours per day.

“I think it’s unreasonable to expect that kids aren’t going to watch TV,” Connolly told Reuters Health. “It’s pervasive in our culture. But you do want to limit screen time to less than two hours per day.” Connolly also said people sometimes say their children need the TV on to sleep, but that’s not the case.

She said consistent bedtimes, regular bedtime routines and a TV-free comfortable sleeping environment are good sleep behaviors.

Source: orlando sentinel

Sleep quality does affect decision-making ability

Fragmented or lower sleep efficiency may affect executive function as it is linked to decline in cognitive abilities of older people over a period of three to four years, a study has found.

Poor sleep quality is associated with a 40 to 50 percent increase in the odds of clinically significant decline in executive function, which was similar in magnitude to the effect of a five-year increase in age.

“This study provides an important reminder that healthy sleep involves both the quantity and quality of sleep,” said M. Safwan Badr, president of American Academy of Sleep Medicine.

The study involved 2,822 community-dwelling older men at six clinical centres in the US
Participants had a mean age of 76 years.

An average of five nights of objective sleep data were collected from each participant using a wrist actigraph.

Cognitive function assessment included evaluation of attention and executive function using the Trails B test.

According to the study authors, executive function is the ability for planning or decision making, error correction or trouble shooting and abstract thinking.

The study appeared in the journal Sleep.

Source: Khaleej times

Toddlers Who Sleep Less May Eat More

Toddlers who get too little sleep tend to eat more and are at increased risk for obesity, a new study indicates.

The study included children in over 1,300 British families who had their sleep measured when they were 16 months old and their diet checked when they were 21 months old.

Those who slept less than 10 hours a day consumed about 10 percent more calories than those who slept more than 13 hours, according to the study in the International Journal of Obesity.

This is the first study to link amount of sleep to calorie consumption in children younger than 3 years, the University College London (UCL) researchers said. They suggested that shorter sleep may disrupt the regulation of appetite hormones.

“We know that shorter sleep in early life increases the risk of obesity, so we wanted to understand whether shorter sleeping children consume more calories,” Dr. Abi Fisher, of the Health Behavior Research Centre at UCL, said in a university news release.

“Previous studies in adults and older children have shown that sleep loss causes people to eat more, but in early life parents make most of the decisions about when and how much their children eat, so young children cannot be assumed to show the same patterns,” she added.

Although the study found an association between toddler’s sleeping less and eating more, it did not prove a cause-and-effect relationship.

The main message from the study “is that shorter-sleeping children may [be] prone to consume too many calories. Although more research is needed to understand why this might be, it is something parents should be made aware of,” Fisher concluded.

Source: web MD

Good sleep needed to fight diabetes, obesity

It’s widely known that sleep is crucial for maintaining our health. Now, a new study sheds light its benefits, concluding that a lack of good sleep can increase the risk of type 2 diabetes, obesity, and other metabolic disorders.

The research, published in The Lancet Diabetes & Endocrinology, says sleep aids in both the prevention and treatment of metabolic disorders because it helps regulate the metabolism of glucose, control food intake, and energy balance.

Disrupting the body’s sleep cycle is also linked to poor metabolic health, increased chronic illness rate, and premature death, according to the new study.

Researchers say more people are getting lower-quality sleep due to the modern lifestyles, including the use of technological devices at nighttime, such as tablets and smartphones.

Source: Health Central

Shift workers beware: Sleep loss may cause brain damage, new research says

Are you a truck driver or shift worker planning to catch up on some sleep this weekend? Cramming in extra hours of shut-eye may not make up for those lost pulling all-nighters, new research indicates.

The damage may already be done — brain damage, that is, said neuroscientist Sigrid Veasey from the University of Pennsylvania.

Alzheimer’s & Sleep

The widely held idea that you can pay back a sizeable “sleep debt” with long naps later on seems to be a myth, she said in a study published this week in the Journal of Neuroscience.

Long-term sleep deprivation saps the brain of power even after days of recovery sleep, Veasey said. And that could be a sign of lasting brain injury. Veasey and her colleagues at the University of Pennsylvania medical school wanted to find out, so, they put laboratory mice on a wonky sleep schedule that mirrors that of shift workers.

They let them snooze, then woke them up for short periods and for long ones.
Then the scientists looked at their brains — more specifically, at a bundle of nerve cells they say is associated with alertness and cognitive function, the locus coeruleus.

They found damage and lots of it.
“The mice lose 25% of these neurons,” Veasey said.
This is how the scientists think it happened.
When the mice lost a little sleep, nerve cells reacted by making more of a protein, called sirtuin type 3, to energize and protect them.

But when losing sleep became a habit, that reaction shut down. After just a few days of “shift work” sleep, the cells start dying off at an accelerated pace.
The discovery that long-term sleep loss can result in a loss of brain cells is a first, Veasey said.

“No one really thought that the brain could be irreversibly injured from sleep loss,” she said. That has now changed.

More work needs to be done on humans, she said. And her group is planning to study deceased shift workers to see if they have the same kind of nerve damage. They hope their research will result in medicines that will help people working odd hours cope with the consequences of irregular sleep.

Source: CNN

Alzheimer’s onset could be triggered by sleep disturbances

Researchers have suggested that people, who experience chronic sleep disturbance – either through their work, insomnia or other reasons – could face an earlier onset of dementia and Alzheimer’s. whether this is a cause or effect has been unknown. Now, researchers say individuals with chronic sleep disruptions could face earlier onset of Alzheimer’s.

The researchers, from Temple University in Philadelphia, PA, have published the results of their pre-clinical study in the journal Neurobiology of Aging.

As a start, the team focused on longitudinal studies that showed individuals who reported chronic sleep problems often develop Alzheimer’s disease.

Sleep disturbances can be caused by a number of factors, including work, stress, insomnia or other factors. According to the Centers for Disease Control and Prevention (CDC), insufficient sleep is associated with chronic conditions and diseases, such as diabetes, cardiovascular disease, obesity and depression.

“The big biological question that we tried to address in this study is whether sleep disturbance is a risk factor to develop Alzheimer’s or is it something that manifests with the disease,” says lead author Domenico Praticò, professor of pharmacology and microbiology/immunology in the university’s School of Medicine.

After a study researchers says Disruption in synaptic connection impairs brain
Praticò explains that elevated levels of phosphorylated tau can disrupt the synaptic connection of cells or the ability to transport nutrients or chemicals, or transmit electrical signals from cell to cell.

Tau protein is an important part of neuronal cell health, so these elevated levels cause a disturbance in normal function.

“Because of the tau’s abnormal phosphorylation,” Praticò says, “the sleep-deprived mice had a huge disruption of this synaptic connection. This disruption will eventually impair the brain’s ability for learning, forming new memory and other cognitive functions, and contributes to Alzheimer’s disease.”

Since the sleep-deprived mice developed this Alzheimer’s brain pathology before the mice that had normal sleep, the team says sleep disturbances act as a trigger, accelerating these pathological processes and damaging the synaptic connection.

“We conclude from this study that chronic sleep disturbance is an environmental risk factor for Alzheimer’s disease,” Praticò says. “But the good news is that sleep disturbances can be easily treated, which would hopefully reduce the Alzheimer’s risk.”

The team says correcting sleep disorders could be a “viable therapeutic strategy” to prevent or slow progression of Alzheimer’s disease in people at risk.

Source: Medical news today

 

World Sleep Day: Lack of sleep can cause heart disease

How you sleep is a major determinant of how well your heart functions. A new study carried out on cardiac patients at the Sir Gangaram Hospital here revealed that around 96 percent of patients who have cardiovascular problems have sleep apnea.

Sleep apnea, which is clinically called Obstructive Sleep Apnea Syndrome (OSAS), is a type of disorder characterized by pauses in breathing or instances of shallow or infrequent breathing during sleep.

“Lack of sleep is directly related to cardiac diseases,” Sanjay Manchanda, head of Sir Gangaram Hospital’s Department of Sleep Medicine, told IANS.

“Quality of sleep is very important. A good night’s sleep prevents heart attacks, diabetes as well as road accidents.”

The study, carried out by the hospital in collaboration with Philips Healthcare, also proves the correlation between lack of sleep and heart ailments.

It said that 58 percent of patients of cardiovascular disorders had severe sleep apnea and an estimated 85 percent of them were not aware that sleep apnea and
cardiovascular diseases were correlated.

Removing some of the myths associated with sleep apnea, the study further said that there is no correlation between weight and extent of sleep apnea.

Even thin patients can develop the disorder.

The severity of sleep apnea in cardiac patients was found to increase with age, the study said.

Sleep apnea involves cessation of airflow for 10 seconds or more during the night due to partial or full collapse of the airway in human beings. The reduced or absent airflow results in high carbon dioxide and low oxygen.

The sufferer is forced to increase his breathing effort against the collapsed airway. This means that the sufferer arouses to a lighter stage of sleep, which
leads to sleep fragmentation and the person wakes up unrefreshed.

Added Manchanda: “It is by far the single most common disorder seen at sleep centres and is responsible for more mortality and morbidity than any other sleep disorder.”

He said though there are many reasons that can lead to sleep apnea like alcohol, smoking and use of sedatives, in some people it is due to the structure of their
throat and the upper part of their body.

Snoring, the doctor said, is just an indication of the condition.

According to J.P.S. Sawhney, chairman of the cardiology department at Sir Gangaram Hospital, sleep apnea as a disease is grossly untreated.

He said its correlation with cardiac disease has not been understood by the public as yet.

However, the doctors said that the condition is easily treatable.

Surgical intervention or a machine called C-Pap which ensures trouble-free breathing during the night, can easily help patients.

The C-Pap, one of the most common treatments, derives its name from the application of “continuous positive airway pressure” (or forcing air) through a patient’s nose to prevent limp throat muscles from closing off the airway.

The price of the machines, which have several variants, range between Rs. 35,000 and Rs. 90,000.

Source: Daiji world

TV time linked to less sleep for kids

The more television children watch, the less total sleep they’re getting, according to a small Spanish study.

Researchers found that a nine-year-old who watched five hours of television a day, for example, slept an average one hour less a night than a nine-year-old who watched television for less than an hour and a half a day, lead author Marcella Marinelli, from the Center for Research in Environmental Epidemiology in Barcelona, told Reuters Health.

The study team followed some 1,700 children for up to three years and found those who increased their TV time got even less sleep as they grew up.

“This study really demonstrated that kids who watch a lot of television and continued to do so continued to have a trajectory of less sleep than they should have,” said Christina Calamaro, from the Nemours Alfred I. duPont Hospital for Children in Delaware, who was not involved in the research.

Marinelli and her colleagues write in JAMA Pediatrics that theirs is the first study to examine the relationship over years between the amount of time toddlers and school-age children spend watching television and the amount they spend sleeping.

The American Academy of Pediatrics estimates the average child spends eight hours a day in front of a screen. AAP recommends that parents limit kids’ daily screen time to one or two hours.

Pre-school age children need a total of 11 to 12 hours of sleep a day and school-aged kids need at least 10 hours a day, according to the National Institutes of Health.

Using data from a larger health study, Marinelli’s team assessed the sleep and television habits of 1,713 children in two Spanish cities and on the Mediterranean island of Menorca.

In the cities of Sabadell and Valencia, researchers asked parents how much time their children slept and how much TV they watched when they were two years old and again when they were four years old. In Menorca, researchers questioned the parents of children when they were six years old and again at nine years old.

The researchers categorized children who watched less than an hour and a half a day of television as “shorter” TV viewers and those who watched more than that as “longer” viewers.

TV viewing times at the beginning of the study period ranged from zero to a maximum of eight hours a day, though the median viewing time was about one hour a day. Sleep times ranged from three to 20 hours a day initially, but the median was about 12 hours for two-year-olds, 10 hours for four-year-olds and 11 hours for the six-year olds.

At all points, kids who were longer viewers got less sleep than kids who were shorter viewers.

Median sleep times dropped by about two hours during the two-to-three year follow-up period for all age groups. But kids who increased their TV viewing during that period lost even more sleep time than the others – an average of 20 percent.

Children who reduced their viewing time during follow-up tended to get more sleep, but that result could have been due to chance, the researchers note.

Marinelli’s team did not look at what kinds of shows the children watched on television, what times of day they watched or where the TVs were located. Their study cannot prove that TV viewing caused the differences seen in sleep times or explain why that might be.

One recent study found slightly older kids, aged 11 to 13, slept significantly less when they frequently watched television before hitting the sack (see Reuters Health story of January 24, 2014 here: reut.rs/1fjXJnq).

The researchers adjusted their findings for other factors that might influence the results – including the kids’ gender, weight, exercise, symptoms of attention-deficit hyperactivity disorder, whether children slept alone or with others, humidity in their bedrooms and the age of their mattresses. Researchers also adjusted for parents’ marital status, educational level and psychopathological symptoms.

“They controlled for all the right variables, and television popped out,” Calamaro said.

“We are not paying attention to how much technology children are using and how much television children are watching and what it’s doing to their sleep.”

Calamaro agreed with the study authors, who theorized that fast-paced television images could disrupt children’s brain development or might cut children’s motivation to play, exercise, draw and do other things that enhance neurodevelopment. She said television time could also simply displace sleep time.

Calamaro stressed the importance of playtime and sleep to children’s development.

“This paper really says, wait a minute, when television viewing starts young, it continues to be an issue for children’s sleep as they get older. It feeds into parents’ need to limit technology at an early age,” she said.

Marinelli said she only allows her three-year-old daughter to watch educational television and limits her to no more than half an hour a day.

“Parents must control the use of television especially in very young children and also the use of other devices, for example mobile phones,” she said.

Source; reuters

Causes of Fatigue and Sleepiness and How to Fight Them

1: Not Enough Sleep
It may seem obvious but you could be getting too little sleep. That can negatively affect your concentration and health. Adults should get seven to eight hours every night.
Fix: Make sleep a priority and keep a regular schedule. Ban laptops, cell phones, and televisions from your bedroom. Still having trouble? Seek help from a doctor. You may have a sleep disorder.

2: Sleep Apnea
Some people think they’re sleeping enough, but sleep apnea gets in the way. It briefly stops your breathing throughout the night. Each interruption wakes you for a moment, but you may not be aware of it. The result: you’re sleep-deprived despite spending eight hours in bed. Your doctor may order a sleep study to check for this.
Fix: Lose weight if you’re overweight, quit smoking, and you may need a CPAP device to help keep your airway passages open while you sleep.

3. Not Enough Fuel
Eating too little causes fatigue, but eating the wrong foods can also be a problem. Eating a balanced diet helps keep your blood sugar in a normal range and prevents that sluggish feeling when your blood sugar drops.
Fix: Always eat breakfast and try to include protein and complex carbs in every meal. For example, eat eggs with whole-grain toast. Also eat small meals and snacks throughout the day for sustained energy.

4: Anemia
Anemia is one of the leading causes of fatigue in women. Menstrual blood loss can cause an iron deficiency, putting women at risk. Red blood cells (shown here) are needed because they carry oxygen to your tissues and organs.
Fix: For anemia caused by an iron deficiency, taking iron supplements and eating iron-rich foods, such as lean meat, liver, shellfish, beans, and enriched cereal, can help.

5: Depression
You may think of depression as an emotional disorder, but it contributes to many physical symptoms as well. Fatigue, headaches, and loss of appetite are among the most common symptoms. If you feel tired and “down” for more than a few of weeks, see your doctor.
Fix: Depression responds well to talk therapy and/or medication.

6: Hypothyroidism
The thyroid is a small gland at the base of your neck. It controls your metabolism, the speed at which your body converts fuel into energy. When the gland is underactive and the metabolism functions too slowly, you may feel sluggish and put on weight.
Fix: If a blood test confirms your thyroid hormones are low, synthetic hormones can bring you up to speed.

7: Caffeine Overload
Caffeine can improve alertness and concentration in moderate doses. But too much can increase heart rate, blood pressure, and jitteriness. And research indicates too much actually causes fatigue in some people.
Fix: Gradually cut back on coffee, tea, chocolate, soft drinks, and any medications that contain caffeine. Stopping suddenly can cause caffeine withdrawal and more fatigue.

8: Hidden UTI
If you’ve ever had a urinary tract infection (UTI), you’re probably familiar with the burning pain and sense of urgency. But the infection does not always announce itself with such obvious symptoms. In some cases, fatigue may be the only sign. A urine test can quickly confirm a UTI.
Fix: Antibiotics are the cure for UTIs, and the fatigue will usually vanish within a week.

9: Diabetes
In people with diabetes, abnormally high levels of sugar remain in the bloodstream instead of entering the body’s cells, where it would be converted into energy. The result is a body that runs out of steam despite having enough to eat. If you have persistent, unexplained fatigue, ask your doctor about being tested for diabetes.
Fix: Treatments for diabetes may include lifestyle changes such as diet and exercise, insulin therapy, and medications to help the body process sugar.

10: Dehydration
Your fatigue can be a sign of dehydration. Whether you’re working out or working a desk job, your body needs water to work well and keep cool. If you’re thirsty, you’re already dehydrated.
Fix: Drink water throughout the day so your urine is light colored. Have at least two cups of water an hour or more before a planned physical activity. Then, sip throughout your workout and afterwards drink another two cups.

Source: Health India

Big belly raises death risk in heart attack survivors

http://topnews.in/files/big-belly101.jpgHigh waist circumference, severe obesity has been linked with the greatest risk of death in heart attack survivors, according to a research.

Professor Tabassome Simon said that the impact of obesity on long term mortality and cardiovascular complications in the general population has been the object of recent debate and much emphasis has also been given to the deleterious role of abdominal obesity.

Simon said that at the time of a heart attack, early mortality tends to be lower in obese patients, a phenomenon well known in critical care situations and described as the `obesity paradox`.

At 5 years, absolute mortality was highest in the leanest patients (BMI less than 22 kg /m2) and lowest in patients with BMI between 25 and 35 kg /m2 (i.e. overweight and mild obesity). Patients with severe obesity (BMI = 35 kg/m2) had a markedly increased mortality after 3 years. Severe abdominal obesity (waist circumference more than 100 cm in women and more than 115 cm in men) was also associated with increased long-term mortality.

Simon said that as waist circumference is strongly linked to BMI, the researchers determined the upper quartile of waist circumference within each BMI category and used both variables together to determine their respective role in association with long-term mortality.

She added that they found that both lean patients (BMI less than 22 kg/m2) and very obese patients (BMI =35 kg/m2) had an increased risk of death at 5 years: + 41 percent and + 65 percent, respectively. Being in the upper quartile of waist circumference was also an indicator of increased mortality at 5 years (+ 44 percent).