Soups that help you lose and maintain a healthy weight are broth-based soups that have a low-calorie density. You see fat from oil, butter, and cream increase the calories of a soup but will not make you feel full. Studies show that preloading with a low-fat (low-calorie) soup before the main meal can help lower the overall calories of the meal while leaving you feeling satisfied. This mushroom potato soup fits that bill because it's low fat and high in fiber. For other soup recipes that can help you lose weight, check out Miso Soup with Mushrooms and Detox Beet Soup.