One in three people over the age of 65 will develop dementia - but a new survey shows that less than half of people in Wales have a good understanding of the condition.
Now the charity Alzheimer's Society is launching a scheme in Wales to encourage people to become 'Dementia Friends' in a bid to raise awareness.
The programme aims to help change the way people think, talk and act about dementia.
A YouGov survey commissioned by Alzheimer's Society found that less than half (46%) of people in Wales feel they have a good understanding of dementia.
Dementia - what is it?
The word 'dementia' describes a set of symptoms that may include memory loss, and difficulties with thinking, problem-solving or language
It is caused when the brain is damaged by diseases, such as Alzheimer's disease, or a series of strokes
There are 100 different types of dementia, with Alzheimer's the most common
All types of dementia are progressive - meaning that the structure and chemistry of the brain are increasingly damaged over time - and the person's ability to remember, understand, communicate and reason gradually decline
How quickly dementia progresses depends on the individual - everyone experiences it differently
Dementia - the stats:
Over 45,500 people are estimated to be living with dementia in Wales
One in three people over 65 will develop dementia
800,000 people in the UK have a form of dementia - more than half have Alzheimer's disease
In less than ten years, it is predicted that a million people in the UK will have dementia
By 2051, it is predicted that 1.7 million people in the UK will have dementia
What is the 'Dementia Friends' programme?
Alzheimer's Society wants 'Dementia Friends' to learn a little bit more about what it is like to live with dementia - and then turn that understanding into action.
That could mean anything from helping someone find the right bus - to spreading the word about dementia on social media.
As the brain gradually shuts down, people with dementia sometimes need a helping hand to go about their daily lives and feel included in their local community.
This is what Dementia Friends aims to provide.
For more help and information:
Alzheimer's Society has a National Dementia Helpline - the number is 0300 222 11 22