Deep Sleep May Wash Toxins from the Brain

According to a new study, activity in the brain changes during deep sleep in a manner that allows the cerebral spinal fluid to rinse out the waste products that can accumulate during the waking hours. Sleep medicine specialist Dr. Raman Malhotra writes, “[This may] help explain why individuals who don’t get enough sleep, or suffer from sleep disorders, are at higher risk of certain chronic health conditions.”

Science, October 2019