The brain's cleaning system has been observed working naturally by scientists for the first time in research that may help in the fight against Alzheimer's. Researchers have been able to use MRI scanners to watch in real time as spinal fluid flushes waste products out of the brain and circulates them alongside blood vessels, to be removed by the body. Alzheimer's disease is characterised by the build-up of waste products, and some scientists hypothesise that it could be caused by the brain?s inability to clean itself. This finding could explain the link between Alzheimer's and poor sleep and exercise. https://www.theaustralian.com.au/news/world/the-times/brains-cleaning-system-raises-dementia-hopes/news-story/ba28a4f9b2810cf8cd5b31380bcc5afb?