iuculano, Via #ABC News
Scientists have long known a #gene called #APOE4 is one of many things that can increase people’s risk for #Alzheimer's, including simply getting older. The vast majority of Alzheimer’s cases occur after age 65. But #research published Monday suggests that for people who carry not one but two copies of the gene, it's more than a risk factor, it's an underlying cause of the mind-robbing #disease.