She said the online tests provided results which were incredibly sensitive.

”Far more sensitive than you would ever have in a clinic, and they’re able to detect change in key areas of brain function, things like memory, speed of processing, attention and day to day function.”

She said that when people’s tests results were matched with the proteins in their blood it gave an idea of who would be at higher or lower risk of dementia in the future.

”So we are able to map all these different factors and understand which of them are contributing to the way that people are ageing and their potential risk of dementia.

“That information can then allow us to intervene, to design new treatments to help people reduce their risk of dementia as they age.”