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Neuroscience & Health
Blood-Brain Barrier
Blood-Brain Barrier
A protective filter that helps keep harmful substances out of the brain.
Details
The blood-brain barrier is the brain’s protective shield. It controls what can pass from the bloodstream into the brain, helping block harmful substances while allowing important nutrients through.
💡 Real-Life Example
Some cold medicine causes drowsiness because ingredients can cross the blood-brain barrier and affect the brain.
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This content is for educational purposes and does not replace professional medical diagnosis.