I used the Zone diet ( & exercise ) 7 years ago to drop about 80 lbs. It was a change to cut the bad carbs out..... but you do get used to it and don't miss them. Since then I have stayed on the diet ( with some alterations). My Dr. has nothing bad to say about the diet... my blood work is always great! I am not going to tell everyone that this is "THE" diet, for as we all know, no one diet works for everyone. Just that it has worked well for me and continues to.