#845: How to Use Ketosis for Enhanced Mood, Cognition, and Long-Term Brain Protection — A Practical and Tactical Guide with Dr. Dominic D'Agostino (Plus: Deconstructing Tim’s Latest Keto Experiment)

What It Covers

Dr. Dominic D'Agostino and Tim Ferriss deconstruct Tim's month-long ketosis experiment using continuous glucose and ketone monitors, covering practical implementation strategies, metabolic psychiatry applications, neuroprotection protocols, exogenous ketone toxicity, and optimal dosing schedules for therapeutic benefits.

Key Questions Answered

• •Ketosis Entry Protocol: Intermittent fasting for 16 hours depletes liver glycogen and enables metabolic switching, making ketogenic diet transitions seamless without typical adaptation symptoms like brain fog or fatigue. This metabolic flexibility eliminates the traditional keto flu experience when shifting from carbohydrate metabolism.
• •Therapeutic Ketone Range: Target blood ketone levels between 1.0-2.0 millimolar for optimal therapeutic benefits. Higher levels (2-5 millimolar) create energy toxicity and reductive stress. Glucose Ketone Index of 1-4 provides therapeutic effects across neurological conditions, cancer management, and metabolic health optimization without adverse effects.
• •Metabolic Memory Effect: Regular ketosis periods create lasting metabolic adaptations through upregulated fatty acid oxidation enzymes and increased mitochondrial capacity. These adaptations persist weeks after returning to normal eating, similar to muscle memory, making subsequent ketosis entries progressively easier and more effective over time.
• •Protein Timing Strategy: Consuming 80+ grams protein with adequate fat, fiber, and salt slows gastric emptying through pyloric sphincter regulation, preventing rapid amino acid absorption that triggers insulin spikes and gluconeogenesis. This buffering effect maintains ketosis despite high protein intake when macronutrients are properly combined.
• •Exogenous Ketone Toxicity: Chronic use of 1,3-butanediol-based ketone esters (including monoesters at 51% and diesters at 35% butanediol content) depletes hepatic NAD and ATP, causing liver inflammation, fatty liver, and sinusoidal dilation. These formulations work acutely but become problematic with daily supplementation patterns.