Zeke Emanuel’s excellent opinion piece in today’s NYT is here. He’s bumping up against some powerful special interests, but I agree with him in this case. The point is that the scan is not really diagnostic in any “for sure” sense and more to the point, there’s no cure right now for Alzheimer’s.
NIH is going to try amyloid-targeting drugs in at-risk healthy seniors, story here. It’s a reasonable approach which may, as the news piece points out, put the nail in the coffin for the amyloid hypothesis–perhaps the dominant theory for how Alzheimer’s happens.