Internal medicine physician and insulin-resistance specialist Dr. Annette Bosworth explains why she believes routinely generating ketones is central to preventing and reversing many chronic conditions. She discusses insulin's role in aging and disease, the practical steps of her "keto continuum" approach, measurement of glucose and ketones, and tools like sardine fasts and exogenous ketones to break through insulin resistance. She also shares case studies from her practice, the story of using a ketogenic diet alongside her mother's cancer care, and her own legal and political ordeal that tested her faith and resilience.