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What is REM Sleep and Why is it Important?

What is REM Sleep and Why is it Important?

Our sleep cycle is separated into two main components: rapid eye movement (REM) sleep and non-REM sleep (NREM). We cycle between the two all night, with four stages of NREM sleep preceding one stage of REM sleep. NREM sleep is the stage at which our body repairs itself, energy is replenished and our immune system is boosted. A complete cycle of sleep takes between 90 and 110 minutes in total, with approximately a quarter of that time being spent in REM sleep. It is also the stage during which dreaming almost always takes place. Scientists are still trying to discover the extent to which REM sleep affects our health and mental well-being, but they do know that REM sleep is important for the development of creativity and problem solving ability, and is how we learn to adapt to our world.

REM sleep was first formally observed by the scientists Aserinsky and Kleitman in the 1950s, who noted the rapid, jerky movements of the eyes through closed lids, as if the sleeper were seeing something, and noticed that breathing and heart rate increased. Another feature of REM sleep is that the voluntary muscle groups become temporarily paralyzed by the base of the brain “shutting off” the neurons in our spinal cord so we do not act out the dreams we are experiencing as we sleep. The electroencephalogram (EEG) that was attached to the sleepers showed levels of brain activity nearly identical to those who were awake. Contrary to what was previously believed about sleep as being a state in which the brain slows down, during REM sleep, the brain is actually very active. Why may this be?

According to French scientist Michel Jouvet, REM sleep is also a way of programming our brain to adapt to the world around us. Much as a computer can be reprogrammed when it is off-line, Jouvet believes our brain can take information it has received during the day and program the central nervous system to organize or maintain instinctive behavior.

The percentage of time spent in REM sleep is the greatest among babies and children. Babies can spend as much as 50% of their sleep time in the REM stage. And while it has been thought that the dreams we experience during REM sleep are a consolidation of the memories that we have experienced during the previous day, babies in the womb (who experts believe have few or no real world memories) spend most of their sleep time in a state of REM.

Professor of psychiatry emeritus at Harvard University, J. Allan Hobson, says of the purpose of REM sleep, “It’s a reinforcement of basic knowledge—knowledge that precedes any waking-state learning: how to be a person, how to be an ego, how to exist in a space, how to move in a space, how to feel. It’s not environmental memory; it’s genetic memory.”

 

Can You Really “Bank” Sleep?

Can You Really “Bank” Sleep?

striped-cat-sleeping-on-chair

Banking sleep to save energy for later? To most people, this idea probably sounds too good to be true. At the very least, it probably seems to defy common sense and or runs counter to the way we think our bodies work. However, it actually turns out that banking sleep is possible—within limits.

A great deal of research has been conducted on this subject.  In one particular study, American scientists invited a number of volunteers to adjust their sleep patterns so that researchers could observe the effects. For a week, half of the volunteers were permitted to sleep more than usual, and the remaining volunteers were made to sleep according to their usual pattern.

“After this week of either extended or habitual sleep per night, all the volunteers came to the lab and they were given three hours of sleep, per night, for a week,” says Tracy Rupp of the Walter Reed Army Institute of Research. The volunteers were then assigned tasks of varying difficulty, and those who had banked their sleep were more unaffected throughout the sleep restriction.

Rupp elaborates: “They showed less performance deterioration with regards to reaction time and alertness than the group that had been given the habitual prior sleep.”

The study also revealed that a week after the experiment, the banked sleepers were recuperating faster from deficiency of sleep than the others were. Rupp again: “What we’re basically saying is if you fill up your reserves and pay back your sleep debt ahead of time, you’re better equipped to deal with the sleep loss challenge.”

While these results may sound great, there are limits to what banking sleep can do for you. “It’s a strategy that’s only partially successful,” explains Michael J. Breus, Ph.D., in the November 2013 issue of Psychology Today. “New research indicates that although some of the negative effects of a week of insufficient sleep can be remedied with extra sleep on the weekend, others cannot. Researchers at Penn State University College of Medicine studied the effects of weekend recovery sleep after a week of mild sleep deprivation. They found that make-up sleep on the weekends erased only some of the deficits associated with not sleeping enough the previous week.”

Banking sleep isn’t limited to sleeping longer nights. Naps can be extremely effective as well—within limits, of course. According to Science Focus, “A 1991 study at Wright State University in Dayton, Ohio found that after an ordinary night’s sleep, subjects could take an extra nap in the afternoon and then work through the night with greater alertness that a control group who didn’t nap. The study also found that performance is proportional to the length of the nap—but the effect doesn’t last.

After a second consecutive night without sleep, all of the subjects performed equally badly, regardless of how much sleep they had initially. It may be that all of us are normally slightly sleep-deprived and one really good night’s sleep will bring us back up to 100%, but that the ‘tank’ isn’t big enough to buffer us against more than one all-nighter.”

The practical uses of banking sleep go beyond needing to pull an all-nighter before finals or a big presentation at work. Dr. Winter, a member of the American Academy of Sleep Medicine, puts it thusly: “If you knew you were going to give birth on a particular day, for example, you could sleep for 10 hours a day for multiple days before the event, and be fine.”

Lastly, it is important to consider the host of negative effects of sleep deprivation. Memory loss, obesity, and even early death comprise some of these consequences. The moral of the story here is that banking sleep in advance may actually be a reasonable short-term strategy for coping with an isolated event (like giving birth). However, the best long-term strategy for staying healthy and performing well is to get a good night’s sleep as consistently as possible.

 

Need a Good Night’s Rest? Try These Natural Approaches Before You Visit the Medicine Cabinet

Need a Good Night’s Rest? Try These Natural Approaches Before You Visit the Medicine Cabinet

man-sleeping-at-playground-200-300How well did you sleep last night? If you’re like nearly one third of American adults, the answer is probably “not that well.” Stress and distractions can make it difficult to nod off, but that doesn’t mean you have to turn to over-the-counter or prescription sleep aids to get the rest you need. Consider these natural sleep aids as a way to get some shut-eye.

Create a Restful Environment and Routine

Creating an environment that is conducive to sleep is an effective way to drift off naturally. This includes making sure your bedroom is dark, quiet, and at a comfortable temperature, as well as following a bedtime routine that helps you wind down and relax. Make sure your bed is comfortable–don’t be afraid to experiment with different pillows and mattress toppers to find the ones that work best for you. Avoid bright lights in the hour before you go to sleep (this includes computers, phones, and televisions). Read a book or take a warm bath before bed to help you relax and get ready to rest. Establishing this type of routine will make it easier to transition from wakefulness to sleep.

Try Chamomile Tea

Chamomile is a traditional herbal remedy that has been used for millennia as a solution for sleeplessness. It is a safe, mild sleep aid that can be a relaxing part of a bedtime routine. If you are taking any other medicinal sleep aids, be sure to consult with your doctor before adding chamomile (or any other oral sleep aid) to your regimen.

Watch What You Eat

Your eating habits can impact your ability to fall asleep. If you rely on coffee to keep you going during the day, try eliminating caffeinated beverages in the ten hours leading up to bedtime. It is also a good idea to avoid eating large meals late at night. It takes your stomach quite a bit of work to digest rich food, which may prevent you from drifting off. Finally, be careful about how many liquids you consume in the last two hours before bed. Late night fluid consumption often leads to multiple bathroom trips, making it hard to settle down and fall asleep.

Consult with a Chiropractor

If you’ve tried these natural sleep solutions and still aren’t getting the rest you need, a chiropractor may be able to help. Interferences in the body’s central nervous system can create a stress response in your body, which makes it difficult to sleep. Chiropractic care can help to correct these interferences safely, allowing your body to function as it should. Chiropractors can also work with you to identify lifestyle factors that may interfere with your sleep patterns and help you create a plan to correct them.

Insomnia is a frustrating issue, but there are natural alternatives to visiting your medicine cabinet. In many cases, a combination of lifestyle changes and chiropractic care can help you find the rest you need.

Seven Deadly Health Sins

Seven Deadly Health Sins

jolly-roger-200-300Behind many of the debates about healthcare in the US—its availability and cost as well as its effectiveness—is an important phenomenon. The demands being placed on healthcare providers are growing and changing (at least in large part) because of the way we live our lives.  Day-to-day choices we all make are contributing to a wide variety chronic health conditions that are sometimes referred to as “lifestyle diseases.” And while our healthcare system is very good at treating acute medical problems, it is not very good at preventing or treating chronic ones.

In many cases, it’s fair to say that the health we get in the future is a result of the lifestyle decisions we make in the present. With this idea in mind, it’s also fair to ask whether it makes good sense to ask our healthcare system to single-handedly save us from the effects of our own unhealthy habits. This is why, as chiropractic physicians, we work closely with our patients to help them be more active in their own health by taking more responsibility for their own lifestyle choices.

So which lifestyle choices are causing the most trouble? While we could obviously point out harmful behaviors like smoking, drinking too much alcohol or using harmful drugs, the behaviors that really need more attention from most people are much more fundamental. We call these the “Seven Deadly Health Sins” that compromise longevity and quality of life.

Sitting Too Much. According to the Mayo Clinic, those who have a sedentary lifestyle are in danger of things like “obesity and metabolic syndrome — a cluster of conditions that includes increased blood pressure, high blood sugar, excess body fat around the waist and abnormal cholesterol levels.” A recent study showed that those who spend a large amount of time in front of a television or other forms of screen entertainment had a roughly 50% greater risk of death from any source.

Eating Too Much Fat, Sugar and Salt. The typical American diet not only contains too many calories, it’s also too high in fat, salt and sugar. In excess, these ingredients (all too common in processed foods) trigger a wide range of complex, self-inflicted health problems.

Sleeping Too Little. According to a recent poll by the National Sleep Foundation, a combination of daily stress and lifestyle choices (including nighttime activities as well as eating and exercise habits) is causing more than a third of the U.S. population to get fewer hours of sleep than they need.

Drinking Too Little Water. Most of us would be much better off if we drank lots more water and fewer sugary drinks. While there’s no real evidence that Americans are chronically dehydrated (despite all the hard work of bottled water companies), there is plenty of evidence that the things we are drinking aren’t particularly good for us from a nutritional point of view.

Mismanaging Stress. Our relationship with stress is a complicated one. The simple truth is that stress itself isn’t inherently positive or negative for our health. The thing we actually have to pay attention to is how we respond to it. While the physiological stress response we’ve inherited through evolution is designed to help us confront immediate physical dangers, most of today’s threats aren’t immediate or physical. The result of this mismatch is that our “fight or flight” response may stay switched on for much longer periods than nature intended. This in turn can cause a variety of health problems. Since stress is an inevitable part of modern life, it’s important for us to embrace the positive view of stress that helps us grow and develop while also learning how to turn off the harmful effects.

Ignoring Posture Problems. The way we carry ourselves while sitting or standing can have lasting implications for our musculoskeletal health. The bad news is that poor posture can reduce our strength, flexibility, and balance and—at the extreme—can cause pain and even compromise organ function. The good news is that posture problems can be corrected once they’ve been recognized. Even better, it’s possible to prevent them by developing good habits in the first place.

Putting Off Preventive Healthcare. The best time to pay attention to your health is while you still have it. Unfortunately, many Americans still cling to the reactive “sickness care” model and don’t take full advantage of the expanded preventive care options that have been made available to them as a result of the Affordable Care Act (ACA). The US Department of Health and Human Services estimates the ACA made 76 million Americans “newly eligible” for free preventive care. But a Kaiser Health Tracking Poll in March 2014 revealed that only 43% of the population was aware of the change, meaning that many people are probably foregoing preventive care out of cost concerns. Remember—it’s always better to recognize and treat a health problem early before it grows worse and becomes more difficult to address!

By avoiding these Seven Deadly Health Sins, you can also avoid many chronic health conditions. If you or someone you care about has health questions or concerns, we encourage you to call or visit our office today. We’re here to help!

How Much Sleep is Too Much?

How Much Sleep is Too Much?

Mother Kissing Toddler's CheekWe all know how important it is to get a good night’s sleep and the detrimental effect on our health if we get too little of it. However, it is also possible to get too much sleep, and this may be even worse than getting too little. Sleeping too much has been shown to be a possible indication of underlying health problems, such as heart disease, diabetes, low thyroid and obstructive sleep apnea, and is liked to an increased risk of early death.

Everyone’s need for sleep differs, and there are good reasons for occasionally having to sleep more, such as during periods of high stress or illness. But on average, experts suggest that the optimum amount of sleep to get on a regular basis is between 7 and 9 hours a day. One study showed that those who slept between 9 and 10 hours per night were 21% more likely to become obese over a period of 6 years than those who slept between 7 and 8 hours a night. Another study of 72,000 women found that those who slept between 9 and 11 hours a night had a 38% greater likelihood of coronary heart disease than those who slept 8 hours.

Depression and low socioeconomic status have also been linked with sleeping too much, so it may be that oversleeping is one of the symptoms of these conditions rather than being a cause of the detrimental health effects associated with oversleeping. People with these conditions are less likely to seek or be able to afford health care, so any underlying health problems may not be discovered and treated.

When underlying health and mental problems have been ruled out, people who still feel a strong need to sleep for 70 hours or more per week have what is called primary hypersomnia. Many with hypersomnia go undiagnosed, as it often develops in the teenage years and can be attributed to typical teenage behavior. A study was performed by researchers at Atlanta’s Emory University on people with this condition. The researchers found that one of the major factors implicated in hypersomnia is the presence of a certain substance in the person’s cerebrospinal fluid that acts much in the same way as a sleeping pill. Emory researcher Andrew Jenkins said, “We know why you’re sleepy—your brain is sedating itself.” It is typical for people with hypersomnia to simultaneously experience low levels of energy, anxiety and memory problems, in addition to extreme sleepiness throughout the day that is generally not relieved by napping.

Obstructive sleep apnea is a condition that causes the sufferer to stop breathing for short periods of time during sleep, keeping them from getting to the stage of restful, restorative sleep that is necessary for proper physical and mental functioning during the day. Some prescription medications and the overuse of alcohol can also lead to oversleeping.

If you find yourself consistently sleeping more than 9 hours a day and are also sleepy throughout the day, it is a good idea to consult with your doctor to rule out any underlying medical conditions that may be contributing to your oversleeping.

 

What is REM Sleep and Why is it Important?

What is REM Sleep and Why is it Important?

baby #21Our sleep cycle is separated into two main components: rapid eye movement (REM) sleep and non-REM sleep (NREM). We cycle between the two all night, with four stages of NREM sleep preceding one stage of REM sleep. NREM sleep is the stage at which our body repairs itself, energy is replenished and our immune system is boosted. A complete cycle of sleep takes between 90 and 110 minutes in total, with approximately a quarter of that time being spent in REM sleep. It is also the stage during which dreaming almost always takes place. Scientists are still trying to discover the extent to which REM sleep affects our health and mental well-being, but they do know that REM sleep is important for the development of creativity and problem solving ability, and is how we learn to adapt to our world.

REM sleep was first formally observed by the scientists Aserinsky and Kleitman in the 1950s, who noted the rapid, jerky movements of the eyes through closed lids, as if the sleeper were seeing something, and noticed that breathing and heart rate increased. Another feature of REM sleep is that the voluntary muscle groups become temporarily paralyzed by the base of the brain “shutting off” the neurons in our spinal cord so we do not act out the dreams we are experiencing as we sleep. The electroencephalogram (EEG) that was attached to the sleepers showed levels of brain activity nearly identical to those who were awake. Contrary to what was previously believed about sleep as being a state in which the brain slows down, during REM sleep, the brain is actually very active. Why may this be?

According to French scientist Michel Jouvet, REM sleep is also a way of programming our brain to adapt to the world around us. Much as a computer can be reprogrammed when it is off-line, Jouvet believes our brain can take information it has received during the day and program the central nervous system to organize or maintain instinctive behavior.

The percentage of time spent in REM sleep is the greatest among babies and children. Babies can spend as much as 50% of their sleep time in the REM stage. And while it has been thought that the dreams we experience during REM sleep are a consolidation of the memories that we have experienced during the previous day, babies in the womb (who experts believe have few or no real world memories) spend most of their sleep time in a state of REM.

Professor of psychiatry emeritus at Harvard University, J. Allan Hobson, says of the purpose of REM sleep, “It’s a reinforcement of basic knowledge—knowledge that precedes any waking-state learning: how to be a person, how to be an ego, how to exist in a space, how to move in a space, how to feel. It’s not environmental memory; it’s genetic memory.”

 

How Much Sleep Is Too Much?

How Much Sleep Is Too Much?

Mother Kissing Toddler's CheekWe all know how important it is to get a good night’s sleep and the detrimental effect on our health if we get too little of it. However, it is also possible to get too much sleep, and this may be even worse than getting too little. Sleeping too much has been shown to be a possible indication of underlying health problems, such as heart disease, diabetes, low thyroid and obstructive sleep apnea, and is liked to an increased risk of early death.

Everyone’s need for sleep differs, and there are good reasons for occasionally having to sleep more, such as during periods of high stress or illness. But on average, experts suggest that the optimum amount of sleep to get on a regular basis is between 7 and 9 hours a day. One study showed that those who slept between 9 and 10 hours per night were 21% more likely to become obese over a period of 6 years than those who slept between 7 and 8 hours a night. Another study of 72,000 women found that those who slept between 9 and 11 hours a night had a 38% greater likelihood of coronary heart disease than those who slept 8 hours.

Depression and low socioeconomic status have also been linked with sleeping too much, so it may be that oversleeping is one of the symptoms of these conditions rather than being a cause of the detrimental health effects associated with oversleeping. People with these conditions are less likely to seek or be able to afford health care, so any underlying health problems may not be discovered and treated.

When underlying health and mental problems have been ruled out, people who still feel a strong need to sleep for 70 hours or more per week have what is called primary hypersomnia. Many with hypersomnia go undiagnosed, as it often develops in the teenage years and can be attributed to typical teenage behavior. A study was performed by researchers at Atlanta’s Emory University on people with this condition. The researchers found that one of the major factors implicated in hypersomnia is the presence of a certain substance in the person’s cerebrospinal fluid that acts much in the same way as a sleeping pill. Emory researcher Andrew Jenkins said, “We know why you’re sleepy-your brain is sedating itself.” It is typical for people with hypersomnia to simultaneously experience low levels of energy, anxiety and memory problems, in addition to extreme sleepiness throughout the day that is generally not relieved by napping.

Obstructive sleep apnea is a condition that causes the sufferer to stop breathing for short periods of time during sleep, keeping them from getting to the stage of restful, restorative sleep that is necessary for proper physical and mental functioning during the day. Some prescription medications and the overuse of alcohol can also lead to oversleeping.
If you find yourself consistently sleeping more than 9 hours a day and are also sleepy throughout the day, it is a good idea to consult with your doctor to rule out any underlying medical conditions that may be contributing to your oversleeping.