To burn fat, our body need to be trained to do so. Barring medical issues, keto diet trains the body to burn fat. Americans typically burn sugar. Eating carbs and sugar can create insulin resistance to the cells which tell our brains we are still hungry. We continue eating but never seem to get full. Healthy Keto diet includes a lot of vegetables, 50%, 30-40% protein, 10% carbs. Use xylitol or eurythrital, munk fruit, for sugar substitute.