Why does it take our brain so long to register when we’re full?

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Why does it take our brain so long to register when we’re full?

In: Biology

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Hunger and satiety — the feeling of fullness that tells you to stop eating — are complex functions regulated by numerous feedback mechanisms in your body. One of those signals comes from your stomach wall stretching to accommodate the meal you are eating. Nerve stretch receptors send signals to the brain that the stomach is expanding and you can begin to taper off and stop eating. At the same time, a hormone called ghrelin, produced when your stomach empties to trigger a hunger message, starts to decrease. The result is more impulses reaching your brain saying to stop eating than to start or continue eating.