Two-Dose Nasal Spray Reverses Brain Aging in Weeks, Texas A&M Finds

Texas A&M researchers report a two-dose nasal spray that uses microRNA-loaded extracellular vesicles to bypass the blood-brain barrier, reduce neuroinflammation, and restore cognitive function in aging animal models within weeks — with effects lasting months and observed in both sexes. Human trials are years away; the team has filed a patent and has backing from the National Institute on Aging, though safety details remain undisclosed.