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Stomach, brain, fat cells, and food linked around a circular path.

What Makes You Feel Hungry or Full

Hunger and fullness emerge as brain circuits combine signals from the body with sensory experiences and the circumstances surrounding eating.

2 minutes read
Blood vessel and branching airways connected through carbon-dioxide and hydrogen-ion symbols.

How Your Body Knows When to Breathe More?

Brainstem networks adjust breathing using chemical feedback, increasing ventilation as rising carbon dioxide and acidity raise respiratory drive.