Research from the Alzheimer's Society found that 250,000 people with the disease live on their own and suffer from feeling lonely.
Here are some of the ways people living with dementia or their carers can find out about support available to them
The Older People's Commissioner says progress has been made in responding to complaints over hospital care, but more needs to be done.
Living a healthy lifestyle could dramatically reduce the risk of developing dementia - according to a major piece of new research. A study of more than two thousand middle-aged men in Caerphilly found the risk can be cut by 60 percent.
Exercise was the key factor but cutting out on drinking alcohol and smoking, as well as eating more healthy food could also have a huge impact. Our correspondent Carole Green reports.
A study which has taken over 35 years to complete has found that exercise can reduce the risk of dementia.
Cardiff University scientists have found that healthy behaviours including no smoking, low alcohol intake, healthy eating and regular exercise can reduce the effects of dementia.
Over 2,235 men were surveyed over 35 years in what is one of the longest investigations into the influence of environmental factors in a chronic disease.
The people who consistently lived a healthy lifestyle had a 60 per cent decline in dementia and cognitive decline.
Thousands of people have turned out to support Memory Walk to raise money for dementia sufferers and their carers. A few of the participants told ITV News why they are getting involved.
More than two thousand people have been taking in part in the Cardiff Memory Walk to raise money for dementia sufferers and their carers.
It's thought this year's event is the biggest ever. With a third of people over 65 expected to die from dementia, those fundraising say it's a great cause.
Welsh actress Ruth Jones has today spoken of her family's battle to understand the onset of her mother-in-law's Alzheimer's disease.
It comes as a campaign is launched to raise more awareness of dementia. It is aimed at businesses like hairdressers, in the hope that they can provide customers with advice on where to go for help, if they think they have it.
With an ageing population, Alzheimer's Society says that the number of dementia sufferers could rise by 40 percent in the next decade.
Welsh actress Ruth Jones is fronting Alzheimer's Society Dementia Awareness Week.
Her mother-in-law Margaret had dementia and she describes her family's experiences in a film made with ITV's Daybreak.
Ruth says: "noticing the gradual decline in her memory and her ability to deal with the day-to-day, that was the most upsetting thing."
"Talking changes everything - it makes the problem less scary - and we all can club together to deal with it."
It is currently Dementia Awareness Week, running between 19 and 25 May this year.
Alzheimer's Society says it simply wants to get people talking about dementia.
It is using the hashtag #TalkDementia on Twitter, as part of the campaign.
The charity has an online forum for people to talk to others about dementia and tips about how to raise awareness.
It has also launched 'Five things you should know about dementia': it is not a natural part of ageing; it's caused by diseases of the brain; it's not just about losing your memory; it's possible to live well with dementia; and there's more to a person than dementia.
There's an estimated 45,000 people in Wales living with dementia and over the next 10 years, that figure is expected to rise to 56,000.
In a bid to raise awareness and get people talking about dementia, Alzheimer's Society is launching a new initiative to get hairdressers in Gwent to raise the issue with their customers and provide them with information.
The charity is holding a range of events to mark Dementia Awareness Week.
- People with dementia say they rely on relatives and friends for social contact with almost a quarter (21%) of sufferers speaking to friends and family on the telephone less than once a month
- Only 28% of people in Wales thought it was possible for someone with dementia to live alone
- Twelve percent of people in Wales said they felt uncomfortable talking to someone with dementia
- Nearly two thirds (62%) of 250,000 people with dementia who live on their own are lonely