Brain Blood Barrier

The blood-brain barrier is a protective shield of tightly packed cells that line the blood vessels in the brain. Its main role is to control what substances can enter the brain from the bloodstream, allowing essential nutrients in while blocking potentially harmful toxins, pathogens, and large molecules. This selective filtering helps maintain a stable environment for the brain to function properly. While it is vital for protection, it can also make it challenging to deliver certain drugs to treat brain disorders. Overall, the blood-brain barrier is crucial for safeguarding brain health and ensuring optimal neurological function.