What Causes ‘Hunger’ and How Is It Regulated?

Hunger is like a signal from your body. When you're hungry, it means your stomach needs food to keep going. It sends messages to your brain through special cells that tell you, 'I need more energy!' Then, when you eat and feel full, those same signals say, 'Stop, I'm satisfied now.' It's like a little conversation between your tummy and your brain.

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Examples

When you're playing a video game and forget to eat, your stomach starts growling because it’s telling your brain, 'I need food!'
After eating a big meal, you feel full because your body sends a message that says, 'No more pizza for now.'
If you skip breakfast, your brain might get the signal to start eating at lunch, even if you weren’t really hungry.

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Categories: Biology · hunger,metabolism,appetite regulation