Up until just a couple years ago, an 85-year-old patient presenting with gradual, amnestic memory loss was almost automatically presumed to have Alzheimer's disease. However, new biomakers and the recognition of conditions like Limbic-predominant age-related TDP-43 encephalopathy (LATE) are reshaping our understanding of cognitive decline in older adults. It's looking more clear that pure Alzheimers dementia is rare in older adults, and co-occurring pathologies that may include Alzheimer's, LATE, Lewy Body, and vascular neuropatholigies, are the rule rather than the exception.

In this episode of the GeriPal Podcast, we sit down with Sterling Johnson and Nate Chin from the University of Wisconsin. Sterling is a clinical neuropsychologist and researcher who leads the CLARiTI study, which is attempting to uncover the intersecting causes of dementia. Nate is the medical director and Clinical Core Co-Leader for the Wisconsin Alzheimer's Disease Research Center (ADRC), the host of the Dementia Matters podcast, and author of a new book When Memory Fades.

We tackle the real-world complexity of mixed dementia and its major diagnostic and clinical treatment dilemmas. We also go in deep to discuss LATE, from what it is, to how it presents, to whether it should change how we think about using newly approved disease-modifying therapies when a patient has confirmed amyloid positivity alongside suspected LATE.