New studies suggest millions with mild cognitive impairment go undiagnosed, often until it’s too late
- Written by Soeren Mattke, Director of the USC Dornsife Brain Health Observatory, University of Southern California

Mild cognitive impairment – an early stage of dementia – is widely underdiagnosed in people 65 and older. That is the key takeaway of two recent studies from our team.
In the first study, we used Medicare data...