I did this last year, when I was doing it I was fine but I didn't socialise and prepared my meals for the week on Sunday, I was in the zone and I think I scared my partner whenever he ate bread,pasta etc. with my crazy eyed looks.
So those that have success good on you. I do recall I was cold all the time, I was taking heaps of vitamins. As a result I ended up getting my gall bladder out and couldn't get back in the zone, it is difficult and I was desperate to loose 35 kg.
I ended putting back the 10kg I had lost and have struggled ever since.
When I went to the sessions I asked about the figures for people who get to goal and how they maintain, I recall the lady said they don't keep those type of figures. hmmmmmmmmmmmmmmm
Anyways I am now doing bodytrim and have been reading The Beck Diet solution to assist me.
I guess most diets work you just have to find the one that works for you!!!! and incorporate it as a lifestyle change.