The premise that hunger makes food look more appealing is a widely held belief just ask those who cruise grocery store aisles on an empty stomach, only to go home with a full basket and an empty wallet. Prior research studies have suggested that the so-called hunger hormone ghrelin, which the body produces when it's hungry, might act on the brain to trigger this behavior. New research in mice by UT Southwestern Medical Center scientists suggest that ghrelin might also work in the brain to make some people keep eating "pleasurable" foods when they're already full... 
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