You need to understand the dance between fat calories and protein calories for weight loss. On a very low carb diet (10-20 grams of carb per feeding), the fewer calories you eat, the faster you lose weight. As fat has 9 calories per gram and protein has 4 calories per gram, you lose weight faster eating mostly protein, as it’s lower in calories. But you can run into trouble with sweet and starch cravings on a very low fat, low carbohydrate diet, because protein is metabolized to blood glucose, which triggers cravings in some patients. If you eat more fat and less protein, you’ll have fewer cravings and cheat less, though you may lose weight a bit more slowly because of the increased calories. But if you eat mostly protein and cheat alot, you won’t lose weight at all. Figure out the balance that works for you.