The main reason is that many of carbohydrates are simply empty calories, and the body can't utilize them, so they simply get stored. One of the greatest ways for weight loss in a nutritious method is to reduce the calorie intake without a lot of alteration to your routine diet. When you add being unable to eat the foods you desire, that deprivation can cause depression, and again, failure. To lose weight healthily, you shouldn't consume less than 1,000 calories per day. This way it is possible to burn those calories. It would be useful to try to reduce calories for a day or two afterward though.