‘More cases if halt in risk fall’

DR Sara Ahmadi-Abhari, lead study author from UCL, said: “The risk of developing dementia at any given age is going down over time, shifting dementia to later years in life.”

But she warned the estimate of 1.2 million cases by 2040 was based on a continued decline in risk, adding the figure could hit 1.9 million “if public health efforts fail”.