Glymphatic System Discovery

The Glymphatic System Discovery, ranked #10, redefines sleep's role in cognition and Alzheimer's disease by enabling a 60% faster clearance of amyloid-beta than the average waking brain. Maiken Nedergaard's 2012 identification of this waste-clearance system, most active during sleep, outperforms prior runner-up theories on sleep function by directly linking sleep to a 40% reduced risk of neurodegenerative decline. This surpasses typical rival explanations that lacked such concrete data, establishing a new framework for understanding neural health.