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Even Your Fat Cells Need Sleep, University of Chicago Study


10/16/2012 7:00:59 AM

In a study that challenges the long-held notion that the primary function of sleep is to give rest to the brain, researchers have found that not getting enough shut-eye has a harmful impact on fat cells, reducing by 30 percent their ability to respond to insulin, a hormone that regulates energy. Sleep deprivation has long been associated with impaired brain function, causing decreased alertness and reduced cognitive ability. The latest finding — published by University of Chicago Medicine researchers in the Oct. 16 issue of the Annals of Internal Medicine — is the first description of a molecular mechanism directly connecting sleep loss to the disruption of energy regulation in humans, a process that can lead over time to weight gain, diabetes and other health problems. The study suggests that sleep's role in energy metabolism is at least as important as it is in brain function.

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