I read an article in Scientific American titled, " Deep Sleep Gives your Brain a Deep Clean." At age 50, this is something I am really considering as anxiety has kept me up more and more. My dad is living out his last days with Dementia and Parkinson's. There is no way to prove it but I know all his medications over the years contributed to his current condition. One thing that sticks out is how interrupted his sleep was for at least 15 years. I remember going on a road trip 15 years ago and he was taking a handful of pills before bed and waking up 3-5 times to pee. Doctors don't think about this side-effect. They just want to treat symptoms with pills and more pills.