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Alzheimer’s pathology, not cognitive decline, drives neuropsychiatric symptoms

Alzheimer’s disease (AD) eventually leads to severe cognitive decline, but most affected individuals also develop distressing neuropsychiatric symptoms. These earlier effects may be more subtle and are not well understood; it remains unclear whether they arise directly from AD pathology or secondarily as psychological reactions due to the cognitive deficits. Now, a new study examines the connections between biomarkers of AD’s hallmark neuropathology, cognition, and other neuropsychiatric symptoms. The study appears in Biological Psychiatry, published by Elsevier.

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