The Sugar Doctor: The Simple Diet That Prevents 80% of Disease!
Steven Bartlett (host), Dr. Andrew Koutnik (guest), Narrator
In this episode of The Diary of a CEO, featuring Steven Bartlett and Dr. Andrew Koutnik, The Sugar Doctor: The Simple Diet That Prevents 80% of Disease! explores keto, Ketones, And Control: A Metabolic Blueprint To Prevent Disease Dr. Andrew Kutnick, a metabolic researcher with type 1 diabetes and a history of obesity, explains how carbohydrate restriction and ketogenic diets can prevent and even reverse many chronic diseases while improving cognition and performance.
Keto, Ketones, And Control: A Metabolic Blueprint To Prevent Disease
Dr. Andrew Kutnick, a metabolic researcher with type 1 diabetes and a history of obesity, explains how carbohydrate restriction and ketogenic diets can prevent and even reverse many chronic diseases while improving cognition and performance.
He argues that long-term high blood sugar (measured by HbA1c) is the top modifiable driver of cardiovascular disease and diabetic complications, and that food—especially carbohydrates—is the most powerful lever for controlling it.
Drawing on clinical trials, a 10‑year case study, and large-scale data sets, he shows that well-formulated ketogenic diets can normalize glucose control in diabetes, preserve cardiovascular health despite higher LDL, support brain function, and maintain muscle mass.
He also discusses exogenous ketones as a rapid way to induce ketosis, their effects on brain stability, cancer progression, and muscle preservation, and offers practical guidance for navigating a engineered food environment that promotes overeating.
Key Takeaways
Long-term blood sugar control (HbA1c) is the single most critical lever for preventing chronic disease.
HbA1c, which reflects average blood glucose over 2–3 months, strongly predicts diabetic eye, kidney, and cardiovascular complications. ...
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Carbohydrate restriction and ketogenic diets can normalize glycemic control and reduce or reverse metabolic disease in many people.
Because carbohydrates are the most potent driver of blood glucose spikes at every meal, reducing them dramatically stabilizes glucose and insulin. ...
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Well-formulated ketogenic diets are not “just bacon and steak” and can maintain muscle and performance.
A proper keto diet emphasizes green leafy vegetables, high-fiber low‑sugar plant foods, adequate protein (meat, fish, eggs, dairy, nuts), and healthy fats (olive oil, avocado oil). ...
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Glucose volatility undermines cognition, mood, and energy; ketones and stable glucose improve brain function.
Repeated glucose spikes and crashes (hyper- and hypoglycemia) are linked to fatigue, irritability, brain fog, poor concentration, anxiety, and physical symptoms like shakiness and blurry vision. ...
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Exogenous ketones rapidly induce a ketotic state and show promise in cognition, performance, cancer, and muscle preservation.
Compounds such as 1,3‑butanediol raise blood ketone levels within minutes and were studied in a DARPA $10M program. ...
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The modern food environment is engineered to drive overeating via processed combinations of sugar, refined carbs, and salt.
Kutnick emphasizes that many seemingly innocuous products—bacon, peanut butter, “zero sugar” snacks, “keto-friendly” bars, dried fruit, fruit smoothies, refined cereals—are formulated to enhance palatability and dopamine responses. ...
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Simple foundational habits—food quality, carbohydrate awareness, exercise, and sleep—have outsized impact on health and performance.
Kutnick advises avoiding liquid calories (soda, juice, smoothies), focusing on whole, minimally processed foods, and considering carbohydrate restriction—especially for those with obesity, prediabetes, or diabetes. ...
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Notable Quotes
“The core of my mission is really to empower individuals to take control over their own health.”
— Dr. Andrew Kutnick
“Glucose control sits at the very top of that pyramid… If unregulated, it’s like focusing on the rims of your car when you don’t even have an engine.”
— Dr. Andrew Kutnick
“There is no pharmaceutical intervention, there is no technology that normalizes this disease. Once you’re diagnosed, the clock starts ticking.”
— Dr. Andrew Kutnick
“It’s actually only recently that we’re rediscovering century‑old wisdom of what nutrition can do for overall health.”
— Dr. Andrew Kutnick
“You will never know the potential of its benefit or lack thereof if you don’t try.”
— Dr. Andrew Kutnick
Questions Answered in This Episode
In your 10-year type 1 diabetes case study, did you observe any subtle trade-offs or side effects on keto (e.g., micronutrient deficiencies, thyroid changes, lipid particle size) that wouldn’t show up in headline metrics like HbA1c and carotid imaging?
Dr. ...
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Given that your athlete study found record-high fat oxidation at >85% VO2 max after four weeks of keto, how would you design a periodized nutrition plan for elite competitors who have to perform repeated all-out efforts across a season?
He argues that long-term high blood sugar (measured by HbA1c) is the top modifiable driver of cardiovascular disease and diabetic complications, and that food—especially carbohydrates—is the most powerful lever for controlling it.
Get the full analysis with uListen AI
For patients with serious mental illness undergoing keto-based interventions, what specific metabolic or inflammatory markers are you tracking, and have you seen any patterns that might predict who will respond best—or poorly—to the diet?
Drawing on clinical trials, a 10‑year case study, and large-scale data sets, he shows that well-formulated ketogenic diets can normalize glucose control in diabetes, preserve cardiovascular health despite higher LDL, support brain function, and maintain muscle mass.
Get the full analysis with uListen AI
You noted that many ‘keto-friendly’ products spike glucose similarly to sugar; if regulators gave you the pen, how would you redesign nutrition labels or front-of-pack claims to make metabolic impact transparent for consumers?
He also discusses exogenous ketones as a rapid way to induce ketosis, their effects on brain stability, cancer progression, and muscle preservation, and offers practical guidance for navigating a engineered food environment that promotes overeating.
Get the full analysis with uListen AI
How would your practical recommendations differ for a relatively lean, metabolically healthy 25-year-old versus a 55-year-old with obesity and prediabetes who wants to use carb restriction and exercise to avoid medications?
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Transcript Preview
What can you tell me about this?
Well, if you look at the science, it's enhancing cognition. We've seen a 50% improvement in how individuals were able to read and absorb information and have better decision-making. And also, we did a study and showed that it delayed the progression of metastatic cancer. And I've actually taken this a number of times, because having been in research for the last 15 years and having lived with multiple chronic diseases, one of which I reversed, some of the most powerful strategies like this were not being told to me when I went to the doctor's office. So let's dig deeper.
Dr. Andrew Kutnick is a research scientist who's worked on over 100 studies on metabolic health, diabetes, and the keto diet. And through his findings, he's helping people prevent chronic diseases, improve cognition, and optimize performance.
I went through some pretty dramatic moments in my childhood. You know, I did everything I was told, right? I exercised all the time, I ate what I was supposed to eat, but I still became obese.
You weighed about 255 pounds?
Yeah. And I had no idea how damaging that actually was to my body, and I think the vast majority of people also don't. But over 20% of children have obesity. That's quadrupled over the last 30 years, and a big part of that is when it comes to food, what looks healthy isn't always healthy, and it's not by accident. And it wasn't soon after that I ended up getting diagnosed with a chronic irreversible disease that obesity puts you at risk for, and that immediately turned it into a journey to understand how to be healthy. And I came across this diet a little over a decade ago called the ketogenic diet. So then I went into the science of this diet and found positive impacts on things like diabetes, obesity, Alzheimer's, serious mental illness, chronic diseases, and I was like, "Oh, wow." 'Cause a lot of people don't realize that many of these are not just preventable, but also reversible.
And you did the longest study ever done of its type on the impact of the ketogenic diet on a patient that had type 1 diabetes.
Yes. Let me, let me tell you all about it.
I see messages all the time in the comments section that some of you didn't realize you didn't subscribe, so if you could do me a favor and double-check if you're a subscriber to this channel, that would be tremendously appreciated. It's the simple, it's the free thing that anybody that watches this show frequently can do to help us here to keep everything going in this show and the trajectory it's on, so please do double-check if you've subscribed, and, uh, thank you so much, because in a strange way, you are- you're part of our history, and you're on this journey with us, and I appreciate you for that. So yeah, thank you. Dr. Andrew Kutnick, if you had to try and sort of summarize and encapsulate what you've spent the last couple of decades of your life focused on and really trying to accomplish, prove, understand from the highest level, what exactly is that?
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