Can’t Stop Snacking? A New Study Says It Could Be An Automatic Brain Response

Your brain is highly sensitive to a lot of factors beyond your willpower — but you’re not completely powerless.

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When you’re full after a big meal but still reach for a bag of chips or a box of cookies, you might blame it on a lack of willpower. But a new study suggests it could be due to how your brain responds to snacks, whether or not you’re hungry.

In the study, published in the journal Appetite in March 2026, researchers measured people’s brainwaves after eating and found that despite being full, they still responded to tempting food cues, such as crisps, chocolate and popcorn.

“Cues are huge,” Thomas Sambrook, the study’s lead author and a psychology lecturer at the University of East Anglia in Norwich, England, told HuffPost.

We live in an environment where “we are bombarded with signals that indicate the nearby availability of tasty food that’s going to make us happy momentarily,” he said, and the brain may respond to this constant exposure by forming habits that tell you to eat when you’re not hungry.

So does that mean snacking is an automatic brain response that’s beyond your control? Here’s what to know about why we snack and how to break over-snacking habits.

What happens in the brain when you snack?

In the study, electroencephalogram (EEG) brain scans monitored 76 hungry people as they played a reward-based game with savoury and sweet foods, including cheese-flavoured crisps, marshmallows, fruit cocktail and rice cakes.

They were given a meal of one of the foods........

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