Like most brain health diagnoses, Alzheimer\u2019s disease is not just one thing. In fact, this week\u2019s guest Dr. Dale Bredesen has identified 5 major subtypes for Alzheimer\u2019s disease, and they all have different causes and different treatment recommendations. In the third episode of a series with Dr. Bredesen, he defines the characteristics of each of these subtypes and identifies how and why they manifest in the brain.\xa0