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Professors Clare Mackay and Simon Lovestone were interviewed by BBC World at One about research into the early signs of Alzheimer's.

The Deep and Frequent Phenotyping study is one of the world's largest and most in-depth studies into the early stages of dementia. The study includes regular brain scans, retinal imaging, blood tests, cognitive and memory testing, and the use of wearable technology to measure movement and gait.

Listen to the BBC World at One programme above to hear from Simon and Clare on what the study is hoping to achieve.