Scientists from Texas A&M University have developed a nasal spray that reduces brain inflammation and restores lost memory function in mice. The spray targets "neuroinflammaging" - small pockets of chronic stress in the aging brain, which is linked to age-related cognitive decline and may play a role in neurological disorders like Alzheimer's. It targeted these hotspots with millions of microscopic biological bubbles, known as extracellular vesicles (EVs), packed with proteins and genetic instructions and produced from human stem cells. The researchers believe this could be seen in people with further research and development. The treatment was consistent and similar across both sexes. The findings align with a growing body of research on how we can age more healthily with less biological wear and tear.