I purchased Doug's book around 3 weeks ago and immediately implemented the recommended diet. I was consuming at least 3 to 4 hundred carbs a day replete with sugar.  Once I began the recommended eating plan, I have lowered my carb intake to less than 10 gms of carb a day.  After three weeks, I have lost only 5 pounds.  I am a 59 yr old male, 5' 10" tall, who now weighs 194 pounds.  My target weight is 175 but I don't understand why the plan is not working.  I am a delivery driver making 15 to 25 stops each shift with the resultant walking to residential and business entities at each stop which often includes several flights of stairs or long distances.  I am an avid golfer playing 2 to 3 times per week.  I have not begun any other exercise program.  I cook from the book's recipes at least four days per week and I love the food.  i am thoroughly convinced that eliminating sugar from my diet is the healthy way to live and I don't intend to abandon this new way of eating.  I just disappointed and confused as to why I am not losing weight more quickly.

Help; what is my problem?