I don't diet. Never have. A "diet" is temporary, and yields temporary results.
I completely changed my eating habits about 4 years ago, because my gall bladder tried to kill me. My Dr. told me that no one can change their diet significantly enough to prevent it from happening again, and that inevitably, the gall bladder will need to come out--generally within the first year following a gall bladder attack.
Still got mine, and it's not going anywhere.
Almost 3 years ago (in May), I gave up meat. It's not a fad...it's forever.
I eat REAL FOOD every day. I've never been more healthy, and for a 35 year old mom of 3 (first two being twins!), I don't look my age, and my body looks better than it did when I was 18. :)