Research News

Incidence of dementia declined in past 30 years in US, study shows

BMJ 2016; 352 doi: http://dx.doi.org/10.1136/bmj.i912 (Published 15 February 2016) Cite this as: BMJ 2016;352:i912
  1. Susan Mayor
  1. 1London

The incidence of dementia in the United States has declined over the past 30 years, results from the Framingham Heart Study have shown.1

The prevalence of dementia is expected to increase dramatically as the average life expectancy rises, but recent estimates have suggested that the age specific incidence of dementia is actually decreasing in high income countries.

To investigate this further, researchers analysed figures from the Framingham Health Study, which has followed participants for incident dementia as part of regular health checks since 1975.

The study included 5205 people over 60 who were assessed with the …

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