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Short Summary
Main recommendation: To lose belly fat, follow a low-carb or keto diet that keeps total carbohydrates very low (about 20 to 30 grams per day), so the body burns its own fat instead of turning dietary sugar into fat. Dr. Eric Dr. Westman argues that sugar, not dietary fat, is the main driver of fat storage, especially abdominal (visceral) fat, which he links to heart disease, stroke, and type 2 diabetes. He says oils, ketone supplements, or MCT products are unnecessary for this approach.
Key Points
- Sugar stimulates insulin, which Westman calls the fattening hormone, so excess sugar is what gets converted to fat, particularly in the belly.
- Westman says belly (visceral or abdominal) fat is tied to atherosclerosis and metabolic syndrome, including high triglycerides, low HDL, high blood glucose, and high blood pressure.
- Westman says a calorie is not just a calorie, because the hormonal response to sugar differs from the response to fat.
- Hunger and food cravings typically fade within a day or two on this diet, and he reports people often losing about one to two pounds per week.
- He says the low-carb/keto diet performed better than low-calorie, low-fat diets in several head-to-head trials he's seen, which he attributes to lower insulin levels.
- He says fatty liver comes from sugar and starch in the diet rather than from dietary fat, in his view.
Details Worth Noting
- Concrete instructions: Keep total carbohydrates at 20 grams per day (he prefers 20; other programs have used 30 grams total per day, not per meal). Eat as much as you like of meat, poultry, fish, and eggs. Eat real food and avoid sugars and starches, which digest into sugar. Do not add extra oils, butter, fats, medium-chain triglycerides, ketone drinks, or ketone pills to force ketosis. Avoid sugar-sweetened beverages and juice, since they add energy that often gets stored as fat.
- Westman says his program is based on low-carb diets dating to the 1860s, historically called the Banting diet, and used by doctors such as Atkins, Eades, Bernstein, and Rosedale.
- He says he has used this program for more than 20 years in research and clinical care at Duke University.
- He acknowledges other approaches (other diets, medications, meal replacements, weight loss surgery) can also work but involve more hassle.
Bottom Line
Westman's core claim is that carbohydrate restriction, not fat restriction, is the most direct way to target belly fat, since low sugar intake keeps insulin low and lets the body burn stored fat. This reflects the speaker's own clinical experience and perspective; it is not a substitute for personal medical advice, especially for people with diabetes or other health conditions.
