Around half the people in the North West currently living with Alzheimer's don't actually know they have it.
And just like cancer - the earlier you get a diagnosis, the better the outcome.
Now, scientists at Lancaster University have developed a simple test could mean thousands will get the treatment they need far sooner.
More top news
The daughter of a Blackpool couple killed in the Tunisian terror attack a year ago today has released a moving tribute.
Becoming dry overnight. Rain arriving from the west on Sunday
Kerrie brings you the latest forecast for the rest of the weekend