US Med Voice

US Med


Vol. 5, No. 1 | January 2013




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Perk Up Your Metabolism...Sleep
Fat Cells Need Sleep to Perk Up Their Metabolism

US MED Gives BackYou know that getting too little sleep can leave you sluggish and irritable but did you know it can make you fat?

Too little sleep increases levels of hormones that make you hungry. If that isn't bad enough, it also decreases hormones that make you full.

According to new research, lack of sleep reduces your fat cells' ability to respond properly to insulin, which is pivotal in regulating how your body uses and stores calories. Quoted in USA Today, University of Chicago researcher Matthew Brady, said, "Our fat cells need sleep to function properly. If you don't get enough sleep, you may feel groggy, and it turns out that your fat cells will be metabolically groggy too." The findings are from a laboratory study that included seven young volunteers whose diet and sleep were monitored in a sleep laboratory for four days on two separate occasions.

The results, reported in the Annals of Internal Medicine, show that four nights of inadequate sleep reduce the body's ability to respond to insulin by 16 percent. Fat cells were even more sleepy, with their ability to use insulin dropping by 30 percent. Insulin helps in the release of the hormone leptin, which makes you feel full. Without sleep, less leptin is released, telling your body it is hungry, increasing your appetite and, bingo, making you gain weight. All because you pulled an all-nighter.  

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