A doctor used a special sound wave treatment with tiny bubbles in one person with early Alzheimer’s, and for a few weeks, the brain’s Alzheimer’s protein markers went down a little—but then they went up even higher by three months.

Scientists used a special sound wave treatment on mice with Alzheimer’s-like brain changes, and after four weekly sessions, they saw fewer and smaller clumps of harmful protein in the memory area of the brain—but the loose, floating version of that protein didn’t change much.

Some Alzheimer's patients had a special ultrasound treatment to open part of their brain, and in most of them, brain scans showed less of a harmful protein linked to the disease.