It's estimated that around 7 million Americans have Alzheimer's disease, a number that's expected to double by 2060. But researchers have found that some of the highest rates of cognitive impairment and dementia exist in a population that's long been one of the most difficult to study: Native Americans. Stephanie Sy recently traveled to Seattle to understand why. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy