Your Post-Meal Sugar Cravings May Have an Evolutionary Purpose

Learn more about how craving sugar after dinner might actually have a biological explanation.

By Stephanie Edwards
Feb 13, 2025 9:45 PMFeb 13, 2025 10:44 PM
woman eating dessert
(Credit: Drazen Zigic/Shutterstock)

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We’ve all been there: You’ve just eaten a big dinner, but you find yourself craving a little sweet treat. Is there a biological explanation for why we always want to leave room for dessert?

A team from the Max Planck Institute for Metabolism Research says yes, there is actually science behind the “dessert stomach,” and it all starts in the brain.

Sugar on the Brain

In their initial study, researchers used mice to investigate the brain’s reaction to sugar. More specifically, they focused on why sugar seems to cause a particular response in the brain, especially when stomachs are already full.

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