New research shows physical activity can clear brain toxins while acting as a ‘fertiliser’ that stimulates new neurons and connections. A satisfying night’s sleep has long been branded as the cure to all ills, particularly when clearing damaging toxins from the brain. Neuroscientists have long believed that deep sleep helps the clearance of problematic debris from the brain, flushing away many of the proteins and metabolites thought to be involved in the development of Alzheimer’s and other dementias.
This is hardly reassuring for the insomniacs among us. However, definitive proof has always been hard to come by, and a new study in the journal Nature Neuroscience has poured cold water on the theory. Though sleep is still vital for many aspects of health, Bill Wisden, a professor at the UK Dementia Research Institute who was involved in leading the study, says being active may play a far bigger role in toxin clearance.
“We have shown that brain clearance is highly efficient during the waking state,” he says. “In general, being awake, active, and exercising may more efficiently clean the brain of toxins.” This is undoubtedly good news for anyone who struggles to get a solid seven hours a night.
After all, a brisk half-hour walk is something most of us can manage even after a night of tossing and turning. Wisden’s suggestion fits in with a growing number of research breakthroughs in recent years that indicate the sheer importance of exercise for all aspects of .
