DEAR DOCTOR K: Can you boil down all of the health advice out there? What do I need to do to age successfully?
DEAR READER: Wow, that's a tall order. Thirty years ago, when I heard people talk about "successful aging," they were talking about avoiding disease and living longer. These days, we want more. Of course we want to live long, disease-free lives. But we also want to be physically fit and functional.