When doctors suspect Alzheimer's, they can order a blood test to learn whether a patient's brain contains the sticky amyloid plaques that are a hallmark of the disease. But the results of that test won't tell the whole story, says Dr. Randall Bateman, a ...

Researchers believe the test could be a new way to foresee how quickly the disease will progress, but evidence so far is preliminary. A growing body of research links insulin resistance, a hallmark of diabetes, to the onset of Alzheimer’s disease.

A long-term study of older adults with moderate hearing loss found that hearing aids did not lead to better performance on memory or thinking tests, but the story did not end there. Over seven years,