How big is your brain? Its size may protect you from memory loss

From autopsies, researchers have long known that some people die with sharp minds and perfect memories, but their brains riddled with the plaques and tangles of Alzheimer’s disease. New research shows that those people have a larger part of the brain called the hippocampus. The research will be presented at the American Academy of Neurology 60th Annual Meeting in Chicago, April 12 – April 19, 2008.