Can docs please explain are carbohydrates really great factors in weight loss?

They are: Carbohydrates stimulate the release of insulin. One reason it is difficult for people to lose weight is that over time, eating a lot of carbs can cause the baseline Insulin level to rise. High Insulin levels = weight gain. In order to lower the baseline Insulin you need to lower the amount of carbs and increase the amount of fiber and protein. Read "Dr. A's Habits of Health" by Wayne Andersen