Professor says one thing may protect you from Alzheimer's Disease
![Professor says one thing may protect you from Alzheimer's Disease](https://i2-prod.walesonline.co.uk/news/uk-news/article29352239.ece/ALTERNATES/s615/1_GettyImages-1444405455.jpg)
Professor Michael Hornberger says some people have a 'silent' version of the disease and we can learn from them
Professor Michael Hornberger says some people have a 'silent' version of the disease and we can learn from them