#375 - Ketogenic diet, ketosis & hyperbaric oxygen: metabolic therapies for weight loss, cognition, Alzheimer's & more | Dom D'Agostino, Ph.D.

View the Show Notes Page for This Episode Become a Member to Receive Exclusive Content Sign Up to Receive Peter's Weekly Newsletter Dom D'Agostino is a neuroscientist and professor at the forefront of metabolic therapies, including ketogenic diets, exogenous ketones, and hyperbaric oxygen. In this episode, Dom breaks down nutritional versus supplemental ketosis, defines meaningful ketone thresholds, and outlines practical ways to achieve ketosis. He explains how a ketogenic diet can support metabolic health and weight loss, and advises on how to maintain adequate protein and avoid common mistakes. Dom surveys the growing landscape of exogenous ketones—from salts and esters to 1,3-butanediol—and effective pairings like caffeine, MCT oil, and alpha-GPC. He highlights the role of ketogenic therapy in cancer (particularly glioblastoma) and its promise for neurodegenerative diseases. The conversation also covers recommended hyperbaric oxygen protocols for brain injuries and cognitive function, situations where fasting or ketones offer cognitive and anti-inflammatory benefits, and touches on the carnivore diet as a ketogenic variant with potential relevance for autoimmune and metabolic conditions. We discuss: Dom and Peter's shared interest in ketosis, and Dom's scientific journey [2:30]; Dom's work for the Navy on oxygen toxicity [7:00]; Nutritional ketosis defined: physiology, biomarkers, and how fasting and diet generate therapeutic ketones [15:00]; The historical roots of ketogenic diets in epilepsy treatment, and evidence showing ketones reduce seizure activity and strengthen brain resilience [19:00]; Dom's personal experience on the ketogenic diet: tracking macros, getting enough protein, and monitoring ketone levels [24:15]; Using a ketogenic diet for weight loss: Dom's guidance on protein, fiber, calorie tracking, lipid monitoring, and more [31:00]; Protein on ketogenic diets: Dom's rationale for higher intake and muscle preservation [38:00]; Incorporating carb