New research from the University of East Anglia explains why human brains struggle to resist food cues after satiety

University of East Anglia researchers find that the brain's reward signals remain active after eating, explaining why it is difficult to resist tempting snacks.

By: AXL Media

Published: Mar 2, 2026, 6:01 AM EST

Source: The information in this article was sourced from University of East Anglia

Neural resistance to food devaluation

Research led by the University of East Anglia has revealed that the human brain does not stop responding to tempting food cues even after the body has reached a state of satiety. The study, published in the journal Appetite, suggests that the neural mechanisms associated with reward remain active regardless of how much an individual has recently eaten. This finding provides a scientific explanation for why people often struggle to resist snacks and treats despite feeling physically full, highlighting a disconnect between physiological hunger and neurological reward processing.

Experimental monitoring of brainwave activity

The study involved 76 volunteers who were monitored using electroencephalogram scans while participating in a reward based learning task. The participants engaged with various food items, including sweets, chocolate, crisps, and popcorn. Midway through the experiment, the volunteers were fed one of these foods until they reached a point where they no longer desired another bite. Although the participants reported a significant decrease in their craving for the food and their behavior indicated they no longer valued it, their brain activity told a different story.

Persistence of reward signals after satiety

Electrical activity in the regions of the brain associated with reward continued to respond just as strongly to images of the food even after the participants were completely satiated. Dr Thomas Sambrook, the lead researcher from the School of Psychology at the University of East Anglia, noted that the brain appears to refuse to downgrade the perceived reward of food based on fullness. This suggests that the mere appearance of delicious looking food can trigger a "reward" signal that may lead to overeating in the absence of any genuine nutritional need.