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Scientists Reverse Brain Aging, with a Nasal Spray

Scientists Reverse Brain Aging, with a Nasal Spray

2026-04-15

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A Texas A&M study shows a two-dose nasal spray can reverse key aspects of brain aging in preclinical models, rapidly reducing neuroinflammation, restoring cellular energy, and significantly improving memory-suggesting a simple, noninvasive therapy may combat age‑related cognitive decline in future.

Your brain is a high-performance engine. Over decades, it doesn't just wear down, it also starts to run hot. Tiny "fires" of inflammation smolder deep within the brain's memory center, creating a persistent brain fog that makes it harder to think, form new memories or even adapt to new environments, all the while increasing the risk to disorders like Alzheimer's disease.

 

Scientists call this slow burn "neuroinflammaging," and for decades it was thought to be the inevitable price of growing older. Until now. A landmark study by researchers at Texas A&M University Naresh K. Vashisht College of Medicine suggests the inflammatory tide responsible for brain aging and brain fog might actually be reversible. And the solution doesn't involve brain surgery, but a simple nasal spray.

 

Led by Dr. Ashok Shetty, university distinguished professor and associate director of the Institute for Regenerative Medicine, along with senior research scientists Dr. Madhu Leelavathi Narayana and Dr. Maheedhar Kodali, the team developed a nasal spray that, with just two doses, dramatically reduced brain inflammation, restored the brain's cellular power plants and significantly improved memory.

 

The most surprising part? It all happened within weeks and lasted for months. The findings, published in the Journal of Extracellular Vesicles, could reshape the future of neurodegenerative therapies and may even change how scientists think about brain aging itself.

 

"Brain age-related diseases like dementia are a major health concern worldwide," Shetty said. "What we're showing is brain aging can be reversed, to help people stay mentally sharp, socially engaged and free from age-related decline."

 

Read the original article on Texas A&M University.