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Scientists just found a hidden “drain” inside the human brain

A hidden waste-removal pathway in the brain has finally been caught in action. Using cutting-edge MRI scans, researchers discovered that fluid flows along the middle meningeal artery in a slow, lymphatic-like pattern—very different from blood. This confirms the presence of a previously unknown drainage hub in humans. The finding could transform how scientists approach brain aging, injury, and diseases like Alzheimer’s.

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