brain has a plumbing system of its own to flush out the junk, cerebrospinal fluid the liquid which suspends the brain and acts as a cushion between it and the skull was actively washing through the organ by hitchhiking on the pulsing of arteries and veins that happens with every heartbeat. The fluid was collecting trash and carrying it out of the brain to lymph nodes for disposal. most bodily organs waste matter is cleared out by the lymphatic system. Unnecessary proteins, superfluous fluids and so on are carried away by special vessels to lymph nodes, where they are filtered out and destroyed. The more active the organ, the more of these vessels there are. The exception is the brain, which has none. Do you think that lack of proper brain study has made it hard to treat brain diseases ?

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