I was nervous to begin with, I couldn't even call the CDC at first! But I have to say I'm so glad I did.
Now I'm not dropping half stones at a time like some, but the weight is coming off, unlike on other diets I've tried. (I've not got loads to lose though in comparison, so thats likely why.)
Prepare for it to be like a rollercoaster, an exciting build up, likely followed by a drop (The first week is hard at times.) then that high you get when you know you've done it and it wasn't so scary in the end!