Summary
Dr. Dominic D'Agostino joins Vanessa Spina to break down how a high-protein ketogenic diet burns fat while sparing muscle, covering his personal keto approach, macro breakdowns, and the appetite-suppressing effects of ketosis. They also dig into the science of exogenous ketones for brain health and cognition, and how ketosis supports body recomposition and strength gains.
Key Points
- A high-protein ketogenic diet (1g+ protein per pound) preserves muscle while burning fat by keeping leucine and mTOR signaling active.
- Exogenous ketones provide an alternative brain fuel that can improve cognition independently of dietary ketosis.
- Ketosis naturally suppresses appetite through elevated beta-hydroxybutyrate, reducing the need for calorie counting.
- D'Agostino personally eats around 60-70% fat, 25-30% protein, and 5-10% carbs for his ketogenic approach.
- Ketone bodies have anti-inflammatory properties beyond their role as fuel, potentially slowing neurodegeneration.
- Strength gains are achievable on keto once you're fat-adapted, typically after 4-6 weeks of consistent carb restriction.
Key Moments
Why Dom D'Agostino pursues daily ketosis with high protein
Dr. D'Agostino explains that he follows a high-protein ketogenic diet with about one gram per pound of bodyweight, using supplemental ketones to maintain around 1 millimolar blood ketones for metabolic optimization.
"I have a lot of reasons for that."
High protein keto as nature's GLP-1 — appetite and fat loss
D'Agostino argues that a high-protein ketogenic diet naturally replicates GLP-1 drug effects through the satiating combination of protein, ketones, and fiber, making it a powerful approach for body composition without pharmaceuticals.
"I would argue that low carb diets, especially the satiating effect of protein, higher fat, fiber, and ketones are kind of like the magic formula"
Ketones as muscle-sparing molecules during caloric deficit
D'Agostino describes the evolutionary role of ketones in sparing muscle protein, explaining that without ketone production during fasting the body would catabolize skeletal muscle to fuel the brain.
"if we did not produce ketones in a fasted state, the ketones largely serve as the energetic fuel for the central nervous system, which uses a huge amount of energy."
Ketogenic diet rescues cardiac hypertrophy in disease models
D'Agostino shares preclinical data showing that a ketogenic diet combined with ketone supplementation restored muscle strength in disease models and created a super-mouse effect on grip strength tests.
"when we took the ketogenic diet and added ketone supplementation, it kind of made like a super mouse."
