Eating a typical Western diet – high in processed foods and sugar-sweetened beverages – raises blood glucose and insulin levels, promotes inflammation, and contributes to many neurological disorders, including Alzheimer's disease. However, a growing body of evidence suggests that a well-planned ketogenic diet, which is low in carbohydrates and rich in protein, fiber, and healthy fats, contributes to overall health. Part I of this three-part Aliquot segment features Dr. Dale Bredesen, an expert in Alzheimer's disease; Dr. Dominic D'Agostino, an expert in ketosis; and Dr. Peter Attia, a medical doctor specializing in aging.