The concept of eating more frequently takes advantage of the system by keeping the digestive component of metabolism from going into a low state. By periodically injecting fuel into the system, you can keep metabolism in medium-to-high cycles instead of the usual low-to-high cycles. This means that in the times between your small meals, your body can keep burning calories at a reasonable rate, some of which will come from fat deposits. This practice of eat-often-eat-less keeps our energy levels at more-or-less constant levels, so we feel more energetic and thus can do more. By adding exercise into the mix, the amount of energy taken from fat deposits increases even more, and weight loss becomes a serious reality.
Now we are all aware that there are so many weight loss scams and quick fix promises out there that you will wonder sometimes just who or what you can trust, but don't lose faith as I would also add that there are many genuine weight loss programs out there among all of the nonsense. A good rule of thumb is to remember that in the majority of cases excess weight has a cause and therefore also has a cure.