Hunger is typically curbed while on a keto diet. If you find you're hungry between meals, it's possible you may not be in ketosis. It can also be due to not eating enough fat or protein. Make sure your consuming enough fat and consider a snack that's low in carbs and high in fat. The keto diet is also a moderate protein diet. Be sure you're consuming enough protein. The increase of fats and proteins on a keto diet will often provide incredible satiety, making the diet easier to follow.