Imagine finishing a hearty burger and fries, feeling stuffed—or even a bit uncomfortable—yet still eyeing that chocolate brownie or milkshake. Sound familiar? Rest assured, you're not alone, and it's not about lacking self-control. Research from the University of Vermont suggests this urge stems from learned habits, though human studies are still needed to confirm.
Psychologists Dr. Scott Schepers and Dr. Mark Bouton from the University of Vermont ran a 12-day experiment with rats. The rodents, with full stomachs, learned to press a lever for treats. Eventually, the lever stopped dispensing food, leading them to associate fullness with treats and hunger with no food. The striking result? Sated rats pressed the lever more often than hungry ones.
While this hasn't been replicated in humans yet, it points to habit formation. If you're accustomed to extras—like dessert after a main course at restaurants—your brain may wire 'full stomach' to mean 'more food ahead.' Over time, this creates an almost reflexive craving, overriding physical satiety signals.
Understanding this can help rewire those habits. Time to retrain our brains.
