US President Donald J. Trump makes an announcement on healthcare in the Oval Office at the White House in Washington, D.C., US, September 18, 2026. REUTERS/Evan Vucci
Evan Vucci/REUTERS

Donald Trump's increasingly foul-mouthed speeches may be a sign of cognitive decline, experts claim.

A New York Times review found that the president, 80, used "all-or-nothing words" almost a fifth more frequently than he did a decade ago, and about five percent more than he did in 2024.

Cognitive experts warn that using such phrases, which describe outcomes in terms of either great success or utter failure, can be a sign of aging and cognitive decline.

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