Is Alzheimer's Caused by Contagious Proteins? | Healthland | TIME.com

Is Alzheimer's Caused by Contagious Proteins? | Healthland | TIME.com: There’s been a lot of excitement over a paper that suggests a surprising way Alzheimer’s may progress in the brain. Based on work on a unique mouse model, researchers suggest that at least one of the abnormalities that drives the disease may spread from nerve cell to nerve cell like a virus.