Fatty Liver Expert: Your Liver Is Filling With Fat Right Now - Dr David Unwin
Your waist should be less than half your height. Use a simple string test: take a piece of string equal to your height, fold it in half, and wrap it around the fattest part of your belly. If it doesn't reach, you're at higher risk for type 2 diabetes. This visceral fat is more dangerous than fat on
2h 11mKey Takeaway
Your waist should be less than half your height. Use a simple string test: take a piece of string equal to your height, fold it in half, and wrap it around the fattest part of your belly. If it doesn't reach, you're at higher risk for type 2 diabetes. This visceral fat is more dangerous than fat on your legs or arms, yet we've normalized 'dad bods' without realizing the health consequences. Dr. David Unwin transformed his practice by helping patients understand that everyday foods like bread, rice, and breakfast cereals convert to sugar in your bloodstream, driving insulin resistance and fatty liver disease.
Episode Overview
Dr. David Unwin, named one of the UK's top 10 most influential doctors in 2018, shares his revolutionary journey from prescribing medications to helping patients reverse type 2 diabetes through low-carb nutrition. After a patient confronted him about never teaching her that bread and cereals were sugar, he began a 13-year mission proving that lifestyle changes can achieve 93% remission rates in pre-diabetes and 73% in early-stage type 2 diabetes—far exceeding pharmaceutical interventions.
Key Insights
The Long Silent Scream: Your Liver's Hidden Crisis
For about 10 years before type 2 diabetes diagnosis, your liver is filling with fat, creating insulin resistance that you cannot feel or detect without testing. This 'long silent scream' means your insulin stops working effectively, forcing your pancreas to produce more insulin to compensate. Eventually, fat accumulates in the pancreas itself, collapsing your ability to produce enough insulin to regulate blood sugar. This invisible progression explains why intervention at the pre-diabetes stage has a 93% success rate, dropping to 73% at early diabetes and just 50% after five years.
Common Foods Are Sugar in Disguise
A bowl of cornflakes contains 8 teaspoons of sugar equivalent, a medium potato contains 7 teaspoons, and 150g of boiled white rice contains 8.5 teaspoons—more than a chocolate bar at 7.5 teaspoons. Even a banana contains 6 teaspoons of sugar equivalent. These 'healthy' foods spike blood glucose just as effectively as candy, yet most people, including professional athletes and successful business leaders, have never learned this basic nutritional fact. The glycemic load (which accounts for portion size and nutrient density) is a better predictor of blood sugar impact than glycemic index alone.
Insulin Does More Than Regulate Blood Sugar
When you consume more carbohydrates than you need for immediate energy, insulin converts that excess glucose into fat stored inside cells—first in your belly, then in your liver. This fat storage is actually your body's protective mechanism to prevent glucose from damaging your arteries. However, fatty liver interferes with insulin's effectiveness, creating insulin resistance. Your pancreas then must produce even more insulin to overcome this resistance, creating a vicious cycle that leads to metabolic disease, high blood pressure, and increased cancer risk.
The Medical System Incentivizes Medication Over Lifestyle
Dr. Unwin reveals that doctors are financially incentivized to prescribe drugs like metformin, with payment structures rewarding medication compliance rather than disease reversal. For 25 years, he blamed patients for failing to lose weight on his advice (eat less, move more, consume all-bran with skim milk), never questioning why his guidance consistently failed. This systemic problem explains why lifestyle interventions remain marginalized despite achieving far superior outcomes: 93% remission in pre-diabetes versus managing symptoms with medication.
Unexpected Benefits of Low-Carb Living
Within weeks of reducing carbohydrates, Dr. Unwin experienced dramatic improvements he hadn't anticipated: liver function improved by 30-50% in patients with 10-year histories of abnormal results, blood pressure normalized without medication, mental clarity increased, sleep requirements decreased by one hour per night, and chronic hunger disappeared. These rapid changes occur because reducing carbohydrate intake reverses the underlying insulin resistance driving multiple metabolic problems simultaneously, not just blood sugar issues.
Notable Quotes
"For every year that you have poorly controlled type 2 diabetes, you're losing 100 days of life. That's about a third of a year."
"Maybe a third of all the people in the world with type 2 diabetes don't even know they have it because they haven't taken a test so they don't know."
"You think you're going to tell me off, don't you, Dr. Unwin? Well, I've got news for you. I'm going to tell you off. When you do my blood tests, you will find that my blood glucose is completely normal despite not taking your metformin. I'm wondering if you're actually qualified as a doctor because in the last 10 years, did you ever once tell me that bread was sugar or breakfast cereals were sugar?"
"I did a horrible thing. I used to say to them, 'Right, so why don't you just have two tablespoons of all bran a day with skim milk and I would advise a few multivitamins and a couple of pints of skimmed milk a day.' That was my advice. And then when it didn't work, who do you think I blamed? Them."
"The failure was not theirs. It was mine. Imagine 25 years of blaming patients for their failure to lose weight and it was my failure because I didn't give them advice that worked."
Action Items
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1
Perform the String Test for Visceral Fat
Take a piece of string equal to your height. Fold it in half. The string should wrap completely around the fattest part of your belly. If it doesn't reach, you have excess visceral fat that increases your risk for type 2 diabetes and metabolic disease. This simple test is more meaningful than BMI for assessing metabolic health risk.
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2
Learn the Sugar Equivalents of Common Foods
Educate yourself on how everyday foods convert to glucose: cornflakes (8 teaspoons), white rice 150g (8.5 teaspoons), medium potato (7 teaspoons), banana (6 teaspoons), chocolate bar (7.5 teaspoons). Understanding these equivalents helps you make informed decisions about carbohydrate consumption. Focus on glycemic load (portion size and density) rather than just glycemic index.
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3
Request a Hemoglobin A1C Test
Ask your doctor for a hemoglobin A1C test, which measures your average blood sugar over the preceding 3 months. This reveals whether you're in the pre-diabetes range (where 93% remission is possible with low-carb intervention) or early diabetes (73% remission rate). Don't wait for symptoms—a third of people with type 2 diabetes don't know they have it.
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4
Experiment with Reducing Breakfast Cereals, Bread, and Rice
Try cutting or dramatically reducing these high-glycemic foods for 2-4 weeks and monitor how you feel. Dr. Unwin's patients reported unexpected benefits within weeks: reduced hunger, improved mental clarity, better sleep quality, normalized blood pressure, and weight loss without calorie counting. Start with one meal per day and expand from there based on results.