If you've ever walked into a room and forgotten why, you know the little flicker of worry that follows. You're not alone-and ...

Samsung is preparing to turn its phones and wearables into an early warning system for cognitive decline, using a new Brain Health check that could flag dementia risk long before symptoms are obvious.

The terms “Alzheimer’s” and “dementia” are often used interchangeably in everyday conversation. But experts note that there are differences between Alzheimer’s disease and other types of dementia.