Scientists have long known of a link between loss of smell and dementia — mainly because the plaque buildup that signals dementia initially occurs in parts of the brain related to memory and smell.

BOSTON — Something as simple as smelling a scratch-and-sniff card might help doctors spot Alzheimer’s disease years before memory problems begin. New research from Massachusetts General Hospital shows ...

Smith Could a simple blood test predict your risk of getting dementia years, or even decades, before you experience memory ...