Scientists have discovered problems with the brain's ability to clear toxins, which they suggest could be why poor sleep and high blood pressure increase the risk of dementia.
In a healthy brain, the glymphatic system clears out poisons and waste. It flushes cerebrospinal fluid (CSF) – the clear liquid that cushions the brain – through the brain along tiny channels around blood vessels. This fluid collects toxins and drains them out of the brain, keeping it clean and healthy.
