The Alzheimer's Prevention Program: Keep Your Brain Healthy for the Rest of Your Life by Gary Small
Dr. Small is a leader in Alzheimer's research, and shares the latest studies and their findings. His program to stave off Alzheimer's symptoms is based on this research, but is itself good old fashioned common sense: eat right, exercise, calm down, and use your brain. I loved that he included self assessments for all those areas, including two memory assessments, so the reader can see where they need to make the most changes. (Each category has sub-groups, so it is not just memory; there are various types of recall assessed.)
I found Small's tone very reassuring. He shared many cases where making simple lifestyle changes made a huge difference in patient's lives, and he continuously emphasized that everyone is capable of making changes that will improve their brain health, including those whose abilities are impaired by other physical or medical limitations.
Many different brain games were included in the book, and, I must admit, I found those either the most enjoyable or most frustrating things in the book, depending on the exercise.