Incidence of dementia in UK men is lower than previously estimated

BMJ 2016; 353 doi: (Published 19 April 2016) Cite this as: BMJ 2016;353:i2258
  1. Anne Gulland
  1. London

New figures have shown the number of cases of dementia to be 40 000 fewer each year in the United Kingdom than previously estimated, with the shortfall mainly in men.

A study in Nature Communications has shown that there are just under 210 000 new cases of dementia every year—74 000 in men and 135 000 in women—whereas the previous estimate was 250 000 new cases a year.1

In the first Medical Research Council funded Cognitive Function and Ageing Study, which took place between 1989 and 1994, researchers interviewed 7500 people aged 65 or over in Cambridgeshire, Newcastle, and Nottingham, with repeat interviews at two years to estimate incidence.

Two decades later (2008-2011) a new sample of the same number of people at the same localities was interviewed, again with a …

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