This article is freely available to all

Article Abstract

Because this piece does not have an abstract, we have provided for your benefit the first 3 sentences of the full text.

Alzheimer’s disease (AD) is a progressive, neurodegenerative syndrome that often firstmanifests with mild cognitive, language, and behavioral symptoms that graduallyFrom the Department of Psychiatry and the Behavioral Sciences, the Department of Neurology,School of Medicine, and the Andrus Gerontology Center, University of Southern California, LosAngeles.worsen in severity, eventually requiring total care for affected patients. Its incidence and prevalenceincrease exponentially with age. AD is the most common form of dementia among theelderly, affecting approximately four million patients in the United States.