Optimal Protein Podcast with Vanessa Spina New Study Changes Everything About Carbs, Fat Loss & Performance (Explained, Dr. Andrew Koutnik Recap)
Mar 27, 2026
A deep dive into a new study reshaping ideas about carbs, fat loss, metabolism, and performance. Short explanations of how protein and ketones tame appetite and preserve muscle. Clear breakdowns of why carbs can drive cravings and how PSMF speeds fat loss. A look at insulin, glucagon, metabolic flexibility, and whether carbs are truly necessary for athletic performance.
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Both Hosts Found Keto Ended Food Noise
- Dr. Andrew Koutnik and Vanessa Spina both struggled with obesity and found low carb ketogenic approaches dramatically reduced hunger and made fat loss feel effortless.
- Koutnik credits a trainer and the metabolic switch to fat adaptation for lasting success, not willpower alone.
Protein Plus Ketones Creates Effortless Satiety
- High protein plus some ketosis produces strong appetite suppression via increased GLP-1, PYY, CCK and ketone-mediated reduction in food-seeking.
- Vanessa and Koutnik aim ~1 gram protein per pound and modest carb reduction to enable daily mild ketosis and stable energy.
Swap Processed Carbs For Protein Bread
- Replace ultra-processed carbs with whole foods and swap some carb servings for protein (e.g., protein bread) to lower carbs without feeling deprived.
- Aim to lower carbs enough to allow some ketosis while targeting ~1 g protein/lb if active.