Alzheimer's insight from international DNA study
28 October 2013 Last updated at 11:04 GMT
Scientists have hailed the discovery of eleven new genes linked to the onset of Alzheimer's disease as an important development in understanding the condition.
It is the largest study into the disease, and has used information gathered from 75,000 people across fifteen different countries.
One of the lead researchers, Professor Julie Williams, spoke to BBC Breakfast's Louise Minchin and Charlie Stayt about the latest research.