The accelerated ageing occurred even in people who didn't become infected, with structural changes in brain scans most noticeable in older people, male participants, and those from disadvantaged backgrounds.
Participants who started out with higher levels of well-being also tended to have higher levels of cognitive function. When participants experienced declines in well-being, they showed similarly-sized declines in cognition.
Jeffries believes that just as Joe Biden's fitness was scrutinized, so too should Donald Trump's, especially given Trump's past questioning of Biden's cognitive abilities.
Miriam Raphael emphasizes the joy and satisfaction derived from finishing crossword puzzles, likening it to a daily routine that keeps her mentally sharp and engaged.