Unhealthy foods, such as sweets and chips, are more appealing to people who haven't had enough sleep, new research suggests.
When researchers examined the areas of the brain that were most active when people were looking at healthy or unhealthy foods, they found the reward centers of the brain were activated when sleep-deprived study volunteers saw pictures of unhealthy foods.
"We found regions associated with reward and motivation -- those that are involved with addiction and pleasure-seeking behaviors -- were more strongly activated in the short-sleep phase," said Marie-Pierre St-Onge, a research associate at St. Luke's Roosevelt Hospital Center and an assistant professor at Columbia University's Institute of Human Nutrition in New York City.
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