> terrifying projections are almost certainly wrong, at least with respect to rich, Western countries.

is, or was, dementia more likely to occur in rich, Western countries? The lifestyle changes helping may suggest that it is.

Speculation on Trump's use of GLP-1 receptor agonists is beneath the impeccably right-wing Economist. But clearly it would be too little too late to arrest his mental decline. He is too many cheeseburgers in.