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Index/Topics/Reagan's cognitive state

Reagan's cognitive state

The debate over whether Ronald Reagan exhibited dementia symptoms while in office, with some studies suggesting preclinical signals but no contemporaneous clinical diagnosis.

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2 results
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...

Jan 20, 2026

Which public incidents of presidential cognitive concerns have historically led to formal medical disclosure or removal from office?

Public incidents tied to concerns about a president’s cognition have sometimes produced medical disclosures (typically after acute medical crises) and often intense public debate, but historically — b...

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