Restoring brain waste clearance may offer clues to cognitive aging

South Korean researchers have identified a previously unclear pathway through which cerebrospinal fluid drains from the brain and demonstrated that age-related impairment incurred in the process can be reversed in mice. A team at the Institute for Basic Science found that cerebrospinal fluid, or CSF, passes through small openings in the membrane surrounding the olfactory bulbs before entering lymphatic vessels and draining into lymph nodes in the neck. CSF is a clear fluid surrounding the brain