US dementia cases are projected to double by 2060. But age-specific risk has fallen about 13 percent per decade — and up to 45 percent of dementia may be preventable.
I turned 48 this week, which meant it was time for my annual physical. After the usual battery of questions from my doctor — How much did I drink? Was I exercising? How was I sleeping? — it was my turn to ask a question. I had one prepared: Should I ... [12125 chars]