Why Don't We All Get Alzheimer's Disease?

Why don't we all get Alzheimer's disease? Roy and colleagues stumbled on a possible reason why we all don't get Alzheimer's disease even though we all have the basic ingredients essential for getting the disease. They found that nature has designed ingenious ways to keep these ingredients separated--like physically separating the gunpowder and the match, so that the inevitable explosion is avoided. Discovering ways to