They work, but they don't work miracles as the advertisements claim. Losing fat can be accomplished quickly and easily. Losing fat is simple, but it is not easy. There's a difference. However, getting in shape involves patience and willingness to work hard.
Results come in direct proportion to the amount of effort a person puts in.
John Doe lost 84 pounds in six weeks. Some people, called endomorphs, inherit a body type that tends to favor fat storage. They may have a slower metabolism and they are often carbohydrate sensitive, gaining fat quickly if they eat poorly and don't exercise. In conclusion, another person's claim of weight loss success may have little or no relevance to your own chances of success. Zero carbohydrate or very low carbohydrate diets are the best way to lose body fat.