Seniors/Aging News

HEALTHBEAT: Plaques or tangles? Scanning brains of healthy seniors for clues about Alzheimer's

Sticky plaque gets the most attention, but now healthy seniors at risk of Alzheimer's are letting scientists peek into their brains to see if another culprit is lurking. No one knows what actually causes Alzheimer's, but the suspects are its two hallmarks — the gunky amyloid in those brain plaques or tangles of a protein named tau that clog dying brain cells. New imaging can spot those tangles i…