The risk of developing dementia is strongly age-related. As life expectancy increases, so the total number of people with dementia is going to increase. It is estimated that 25% of women and nearly 20% of men over 85 in Wales currently have a form of dementia and by 2035 it is predicted that over 6000 people in Cardiff will be living with the disease.

The rate of dementia is predicted to remain relatively stable among those 74 and under, while among those over 75, and over 85 in particular, it is predicted to rise significantly.