By 
Hilary Coller
 | 
TED-Ed Original

How does your body know you're full?

Hunger claws at your belly. It tugs at your intestines which begin to writhe aching to be fed. Being hungry generates a powerful and often unpleasant physical sensation that's almost impossible to ignore. After you've reacted by gorging on your morning pancakes you start to experience an opposing force: fullness. But how does your body actually know when you're full? Hilary Coller explains.

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