If you eat as much as you want on a low carb diet (10 – 20 grams of carb per feeding), or if you eat as much as you want on a very low carb diet (5 – 10 grams of carb per feeding) – you probably won’t lose weight, or you certainly won’t lose very much weight. IHOP doesn’t sell an omelet with less than 1200 calories. A slab of ribs from Outback is 3000 calories. A 4 ounce bag of mixed nuts from the gas station is 600 calories. A cup of coffee with heavy cream from Starbucks is 200 calories. A large tuna salad from Subway is 800 calories. You’ll lose weight twice as fast eating 1500 calories of protein and fat, compared to eating 1500 calories of carbohydrate. But at some point, calories count. You just can’t eat as much as you want, and lose weight.