Hormones that are released during hunger affect decision making

Never make a decision when you are hungry. The hormone ghrelin – that is released before meals and known to increase appetite – has a negative effect on both decision making and impulse control. Such were the results of a recently conducted study at Sahlgrenska University.

When hungry, the hormone ghrelin is produced in the stomach. In a new study conducted on rats at Sahlgrenska Academy, University of Gothenburg, the hormone has been shown to have a negative effect on decision making capabilities and impulse control.

"For the first time, we have been able to show that increasing ghrelin to levels that are seen prior to meals or during fasting, causes the brain to act impulsively and also affects the ability to make rational decisions," says Karolina Skibicka, docent at Sahlgrenska Academy, University of Gothenburg.

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