Accumulation of the protein was more likely to be found in the brains of people who slept less well years earlier, according to a new study.

New studies show that elevated levels of a form of tau called p-tau217 can accurately distinguish Alzheimer’s disease from other forms of dementia, and perhaps even predict it.

The widely expected move comes months after the companies scrapped trials of another Alzheimer’s drug.

Exposing mice to an hour of 40-hertz stimuli every day for a week reduced levels of amyloid-β plaques and tau protein, and improved cognition.

The test uses levels of plasma amyloid-β to estimate the buildup of protein plaques in the brain.

The once fringe idea is gaining traction among the scientific community.

Emerging evidence links bacterial or viral infection with the neuropathology of Alzheimer’s disease.

In a mouse model, researchers mitigated three Alzheimer’s disease–associated symptoms by stimulating gamma waves with light.