Can this nasal spray slow down Alzheimer’s? One couple is helping scientists find out

(By Jon Hamilton for NPR)

Joe Walsh, 79, is waiting to inhale.

He’s perched on a tan recliner at the Center for Alzheimer Research and Treatment at Brigham and Women’s Hospital in Boston. His wife, Karen Walsh, hovers over him, ready to depress the plunger on a nasal spray applicator.

“One, two, three,” a nurse counts. The plunger plunges, Walsh sniffs, and it’s done. Continue reading here…

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