If you've ever struggled with energy crashes after meals, relentless cravings, or weight loss that just won't budge no matter what you try, this episode is for you.
I sat down with metabolic researcher Andrew Koutnik, a scientist who has spent decades studying metabolic health and who personally manages type 1 diabetes through nutritional intervention, to break down the science behind what's really going on in your body. What we uncovered is one of the most important conversations I've had on the podcast, and it starts with one foundational concept: metabolic flexibility.
Metabolic flexibility is your body's ability to efficiently switch between burning carbohydrates and fat for fuel. When that system breaks down, something Andrew calls metabolic inflexibility, the signs show up fast. Energy crashes, brain fog, fatigue after eating, stubborn weight, and blood sugar swings that keep you stuck in a cycle of cravings. Andrew explains how insulin resistance sits at the root of most of these symptoms, and why blood sugar regulation isn't just a concern for people with diabetes, it's central to long-term health, hormonal balance, and how you feel every single day. Understanding this connection is the first step toward changing it.
One of the most misunderstood tools for improving metabolic health is the ketogenic diet, and Andrew is one of the most credible voices in the space when it comes to separating the science from the noise. In this episode, he walks through what actually happens in the body when you reduce carbohydrates, how long true keto adaptation takes, and why so many people feel worse before they feel better when going low carb. That initial fatigue and sluggishness isn't a sign that keto isn't working, it's a sign that your body is actively learning to run on a different fuel source. Andrew breaks down the timeline, what to expect, and how to support your body through the transition so you can get to the other side feeling better than ever.
Perhaps the most practical part of our conversation was the discussion around balancing blood sugar naturally, without extreme restriction, obsessive tracking, or diet culture messaging. Andrew shares the simple, evidence-based strategies that have the biggest impact: eliminating liquid calories, reducing ultra-processed foods, prioritizing protein and fat at meals, and understanding how your personal glucose response shapes your energy and appetite throughout the day.
Whether you're keto-curious, already living low carb, or simply looking to feel more energized and in control of your health, this episode gives you the framework to get there.
