Does a Bad Night's Sleep Make You Eat Fatty Food?
Feb-26-2015

Skipping just a single night of sleep leads to a shift in brain activity that seems to spark a desire to consume more fat the following day, a new study suggests.

The study offers potential insights into the relationship between lack of sleep and the risk of obesity, researchers said.

"The main finding of this study is that one night of sleep loss altered function within the brain's 'salience network,' " explained study senior author Hengyi Rao.

The salience network is a pathway in the brain thought to guide decision-making, according to Rao. He is an assistant professor of cognitive neuroimaging in neurology and psychiatry within the division of sleep and chronobiology at the University of Pennsylvania's Perelman School of Medicine.

What's more, Rao added, a brain scan analysis revealed exactly how the network changed in response to sleep loss, which ultimately enabled his team to accurately predict how much more fat an individual might consume following lack of sleep.

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