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Why Sleep Makes you Skinny

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No matter how much you weigh, odds are you would like it to be less than it is.  Diet plans and weight loss solutions promise quick fix results, but for many people the missing link to losing weight may be hiding in your bedroom.  Research shows that there is a definitive link between sleep deprivation and hormonal changes that increase the likeliness of weight gain. These findings mean that getting a good night’s sleep every night may be as important as any other measure you take to lose weight and be healthy.

Sleepier People Eat More

One study conducted at the New York Obesity Research Center at St. Luke’s-Roosevelt Hospital indicates that people who get less sleep eat more calories.  The participants, who were all in the normal weight range for their age and body type, were split into two groups.  The first group got the recommended amount of sleep each night and the second group slept less than the recommended amount resulting in sleep deprivation.  The team found that no matter which group the participants were in, they burned about the same amount of calories each day.  However, those who were in the sleep deprived group took in about 300 calories more than their well-rested peers.

Hormones Wreaking Havoc

Other studies published in the Annals of Internal Medicine show that the more a person weighs, the less sleep they get and the less sleep they get the more hunger hormones are released resulting in a vicious cycle of sleep deprivation, hormone imbalance, and weight gain.  When taken in context with the other study, this hormonal imbalance could indicate why the sleep deprived participants ate an average of 300 more calories per day.

Glucose Gotchas

According to the National Sleep Foundation, a study completed at the University of Chicago found that accumulating a sleep debt over just a few days negatively affects metabolism, causes disruptions in hormone levels, and rapidly decreases the body’s ability to process glucose.  After only a few days of getting less sleep than they needed, some participant’s glucose processing ability was comparable to that of a diabetic. In another study, also run by Dr. Eve Van Cauter, PhD. , lack of sleep was dubbed the “royal route to obesity”, based on the finding that men and women who were sleep deprived needed to make 30% more insulin than their peers.  Future research may use these findings to determine what it is about sleep deprivation that causes diabetes.

Why Sleep Makes You Skinnier

According to Dr. Van Cauter, one of the reasons sleep deprivation leads to obesity is that modern people confuse the physical sensations of fatigue and sleepiness with hunger.  They eat because they think they are hungry when in fact they are just tired. Because food is our energy, eating can give us a blood sugar bump or a protein push that helps us get through the day.  Over time, this only reinforces the confusion and we eat when we are tired and lose the ability to distinguish hunger from fatigue.

What Can You Do

The most important step you can take as part of your weight loss program is committing to a good night’s sleep.  Consistently going to bed at the same time and waking at the same time may help correct hormonal imbalances, return glucose processing to normal, decrease the need for extra calories, and make you feel like exercising.  Regardless of the method you choose or the diet you decide on, sleep may be the missing link that will finally let you lose those last 10 pounds or put you on a path for long-term weight loss and better overall health.

About Us:

Since 2002, Valley Sleep Center, accredited by the American Academy of Sleep Medicine, has provided Arizona with diagnostic sleep disorder testing in a home-like atmosphere, ensuring a comfortable, relaxing experience for patients. Our Board Certified Sleep Medicine Specialists are experienced and knowledgeable physicians who provide expert advice on sleep and sleep-related disorders. We accept most insurance plans as well as Medicare. For additional information about how we might be able to help you, please contact Lauri Leadley at 480-830-3900.

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Client Reviews
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"I recommend them highly!! I took my 2 year old daughter for a sleep study and was very impressed. Our sleep technician was amazing with her, very patient and kind. The DVD we brought to watch while getting her hooked up got stuck in the TV and they vowed to return it. We got a call the next day checking on our daughter and saying how sweet she was, they mentioned the DVD. Several days later, we received the DVD plus a new copy of the Lion King with a nice note. They are very good at what they do and if they can make a 2 year old feel at ease, they can probably do the same with anyone!!"


Anthea S.


Tempe, AZ

"Great staff, they make you feel so at home. Every medical facility should be this nice. Felt like a nice hotel. Someone has great taste in decorating. Thanks for making us feel at home."


Steve N.


San Diego, CA

"I was especially impressed with Andrew the Respiratory Therapist who reviewed my study with me and answered my questions. Andrew thoroughly explained everything about the Cpap machine-from start to finish. I never felt rushed and was assured I could contact him with any additional questions or needs. Andrew told me he would follow up with a call in a week and he did. I believe this center performed the study appropriately and the added benefit of having Andrew teach me about the machine and what to expect was a bonus."


Candace M.


Scottsdale, AZ