Dementia. It's one of the most dreaded conditions we face as we age. Many people claim they would rather be diagnosed with cancer than dementia or Alzheimer's. What many don't realize is that dementia is not a forgone conclusion as we get older. Our own lifestyle choices and habits can have a significant impact--for good or ill--on our chances of developing the disease. And that means there's hope.Drawing from the latest medical research, Dr. Richard...