A recent study done on 24 people at UC Berkeley has revealed that people who are sleep-deprived are more likely to select higher calorie foods to eat compared to people who are not sleep-deprived. Not enough sleep was associated with increased activity in the reward centers of the brain, particularly the area of the frontal lobes that deals with self-control. These findings are contrary to the belief that sleep deprivation has something to do with increasing levels of the hunger-stimulating hormone, ghrelin.
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Why the Sleep-Deprived Crave Junk Food and Buy Higher Calorie Foods