Aside of helping people with Dementia which I can personally vouch is extremely rewarding spare a thought for those partners and families that care for their loved one it is not an easy time.
There are a lot of people who are very isolated and may not have people locally to help so if you can give somebody a break from their situation please offer.
Help is not always to hand 24/7 and can vary from area to area. It is available in the form of Dementia Cafes and meetings although often people are too proud to ask for help or may consider drop in centres is not for them.
We all need to help with awareness whenever we can and encourage more funding to go into this particular health issue.