Whether readers experience occasional lapses ("Where did I put my car keys?" "Why did I open this closet door?") or are concerned about a family tendency toward Alzheimer's, Tan offers information, exercises, resources and advice to help them sort out whether their memory loss is minor or indicates a deeper problem. The author, who directs a Boston memory disorders clinic, explores the connection between diet and memory and explains the effects Vitamin E, estrogen and alcohol may have on the brain.