There are currently 850,000 people with dementia in the UK, more than ever before, and this number is projected to increase.

Due to the gradual nature of dementia, the mild early-stage symptoms and the low diagnosis rate, it is difficult to know the exact number of people living with the condition. Several studies have been carried out to determine the prevalence of dementia among particular age groups, and these are used to estimate the total numbers of people living with dementia in the UK.

Source: Prince, M et al. (2014) Dementia UK: Update Second Edition report produced by King’s College London and the London School of Economics for the Alzheimer’s Society

Source: YouGov polling for Alzheimer’s Research UK 2nd – 5th May 2012 and ONS population statistics

Source: Lewis, F: Estimation of future cases of dementia from those born in 2015 (July 2015); Consultation report for Alzheimer’s Research UK

Source: Prince, M et al (2014) Dementia UK: Update Second Edition report produced by King’s College London and the London School of Economics for the Alzheimer’s Society

The number of people with dementia in the UK is expected to grow rapidly over the next several decades. As age is the biggest risk factor for dementia, increasing life expectancy is the driving force behind this projected rise.

Source: Prince, M et al (2014) Dementia UK: Update Second Edition report produced by King’s College London and the London School of Economics for the Alzheimer’s Society

Estimated number of men and women living with dementia by age group

The higher life expectancy of women is translated into higher prevalence of dementia in older age groups.

Source: Prince, M et al (2014) Dementia UK: Update Second Edition report produced by King’s College London and the London School of Economics for the Alzheimer’s Society