Lose Weight While You Sleep! (Or Rather Stop Gaining It)

Sleep Deprivation Causes Weight Gain 

Did you know that lack of sleep can cause weight gain? Neither did I. I wish I had found this out a bit sooner, like before I got fat, or at least before I started my current weight loss program. In fact I thought it might be slimming to stay up late- after all you are using more calories when you  up and about than when you are lying slumbering in bed aren’t you? But recent studies indicate that sleep deprivation can indeed cause weight gain.

So how on earth can a lack of sleep cause weight gain?  Eve Van Cauter, director of  the Sleep Research Laboratory at the University of Chicago School of Medicine, and the lead investigator on one of the new studies, says that sleep deprivation activates a small part of the hypothalamus, the region of the brain that also is involved in appetite regulation. The hormones leptin and ghrelin regulate appetite and work rather like a seesaw with leptin at one end and ghrelin at the other. When leptin is up, ghrelin is down. That's when we feel full and don't want to eat, but when leptin goes down and ghrelin is up we get hungry. 

In a long term epidemiological study researchers at the University of Wisconsin and StanfordUniversity tracked 1,024 people ages 30 to 60. The subjects had sleep and blood tests every four years and kept a record of their sleeping habits. It was found that those who regularly slept for 5 hours a night had higher ghrelin and lower leptin levels and a higher BMI.  

Other recent studies show the same connection, including a long term epidemiological study from ColumbiaUniversity. They studied data on over 6000 people to compare sleep patterns and obesity. This is what they found:

It seems that sleep deprived people feel hungrier (leptin is low) and because they are awake for longer they have more time to eat. Not only that but sleep deprived people are stressed and need a pick me up. Their pick me up of choice is- yes high calorie fatty or sugary snacks-real comfort foods. To add to all this night owls are not spending their extra hours on the treadmill. No, they are sitting around watching TV or reading.
 
More studies are now being conducted to discover whether an increase in sleep time would help people to lose weight. 
 

 In the meantime I am off to bed! 

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