I did South Beach about 3 years ago. Lost 40+ pounds and have stayed within 10 pounds of that weight. While on it, I really lost the need for sweets. I keep saying I'm going to go back on for awhile just to get rid of that urge to have hot fudge sundaes or cookies ....which I unfortunately give in to way more than I should.

I think the diet helps you make healthier food choices (most of the time), even after you aren't officially following it anymore.