Brain HealthExercise May Supercharge Your Brain's Waste-Clearance System
The glymphatic system is a network of channels surrounding brain blood vessels that clears out waste products — including toxic proteins linked to Alzheimer's and other neurodegenerative diseases. This review, published in Trends in Neurosciences, examines growing evidence that exercise can enhance glymphatic function. Researchers from Victoria University and Monash University synthesized animal and human studies to map how the glymphatic system works, how it deteriorates with age and neurodegeneration, and how the physiological changes triggered by exercise — such as improved cerebral blood flow, sleep quality, and fluid dynamics — may strengthen this clearance system. The authors propose that exercise isn't just broadly neuroprotective; it may work in part by keeping the brain's own waste-removal machinery running efficiently.
