The reason for losing weight on a ketogenic diet is more likely to be that the higher fat and protein foods make you feel fuller, and therefore you end up eating less calories over time, creating a calorie deficit that allows you to drop weight. Initially you will also deplete your own stores of carbohydrate, which is what leads to the initial weight loss that occurs (and with the carbohydrate stores dropping, you drop water. When you eat carbohydrate you end up weighing more on the scales as you fill your muscle glycogen stores. This is partly water too, as for every 1 gram of carbohydrate you store, you store an additional 3g of water. So, if you move from a ketogenic diet to one that has a higher carbohydrate load, you will gain weight, but if the caloric value of the diet is the same, it’s nothing to worry about. However, if you go back to a diet that contains more processed carbohydrate that makes you feel hungrier and you begin to eat more calories because of it, you can indeed gain weight. It’s about finding a balance that suits your lifestyle, and we can help you with that.