run in the family one of three gene mutations one of three gene mutations 10 times Alzheimers.org.uk Alzheimers.org.uk Alzheimers.org.uk Alzheimers.org.uk family history Alzheimers.org.uk Alzheimers.org.uk four times Alzheimers.org.uk Genetics of dementia 30 percent of people Alzheimers.org.uk can be a genetic component to stuff like Alzheimer's Alzheimers.org.uk