Hunger is regulated by the hypothalamus, which sits behind the bridge of the nose, at the base of the brain, monitoring your body’s levels of blood sugar and the hormones leptin and ghrelin to check whether you’re in an energy deficit. Fullness is regulated by the hindbrain, located roughly where your skull meets your neck: when your stomach stretches, the vagus nerve sends a signal to this area telling you that you’re physically full. Reward, meanwhile, is regulated by a diffuse network of neurons that sit higher up in the brain, driven by dopamine and its search for pleasurable activities.
— Read on www.theguardian.com/lifeandstyle/2026/apr/21/what-really-controls-appetite-hunger-stress-or-habit
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