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Alzheimer's Disease Diagnosis

The use of amyloid PET scans in diagnosing Alzheimer's disease in older adults without symptoms.

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Jan 12, 2026
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What do PET amyloid imaging results mean for asymptomatic older adults who test positive for plaques?

A positive amyloid PET in an older adult without symptoms means the scan has detected fibrillar amyloid plaques—an AD-related pathology that increases lifetime risk of cognitive decline but does not b...

Jan 27, 2026
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Books and memoirs revealing Reagan's post-presidency cognitive decline

Several books and memoirs — notably ’s My Father at 100, ’s Reporting Live, and the posthumously published Reagan Diaries — have fueled debate about whether signs of cognitive decline appeared in befo...