Scientific American:

There is no cure for Alzheimer’s disease. Although a few drugs manage temporarily certain cognitive symptoms of the illness, none can stop or meaningfully slow its progression. “We really don’t have much to offer people,” says Shannon Macauley, a neuroscientist at Wake Forest School of Medicine. Virtually all new treatments have failed in clinical trials. But new research is looking beyond drugs to see what relief might come from a simple LED light and a speaker.

Bathing patients in flashing light and pulsing sounds both tuned to a frequency of 40 hertz might reverse key signs of Alzheimer’s in the brain, according to a paper published in Cell on Thursday. “I think it’s an absolutely fascinating paper to be honest,” says Macauley, who was not involved in this work. “It’s a very provocative idea. It’s noninvasive and easy and low cost, potentially, so if it were to come to fruition in humans—that’s fabulous.”

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