New gene triples risk for Alzheimer's disease

Elaine Vlieger, 79, walked near her home near Denver, Colo. Vlieger is making some concessions to her early-stage Alzheimer's, but isn't ready to give up either her home or her independence. Scientists have identified a new gene variant that seems to strongly raise the risk for Alzheimer's disease, giving a fresh target for research into treatments for the mind-robbing disorder.