I would just like to say that there is no giving up your favorite meals to lose weight.. I have lost 35 kg eating only less that I have in the past..
You can lose weight on pizza and mcdonalds if you want but you must count your calories..
If your weight is not dropping ur eating to many calories a day..
And a hint.. yes it is posible but the portions are quite small for a normal eater if you eat high caloric foods..
Little by little you get used to it.. and your stomach is flatter cuz of it to!
Try it .. it worked for me,, but realy WRITE DOWN EVERYTHING YOU EAT TO THE CALORIE!