I did Atkins and dropped 130 lbs. Have kept it off for over 4 years. But the key is to follow it strictly. I suggest reading the book to understand how you should do it. Now, even though it helped me lose, I don't believe it would work long term, so I modified my diet and incorporated whole grains and wheat pasta back into my diet with a steady exercise program. The key to any weight loss is a reduced caloric intake and exercise.If you follow the 2 week induction plan as stated in the book you could see great results. From my experience, I lost 17 lbs in those 2 weeks. But I was weighing 285 lbs at the time.But always remember not every diet is for everybody. While some may do well on Atkins, some may do better with Weight Watchers or NutriSystem.Drinking enough water is also key for a diet to help flush out the toxins. Hope this helps and good luck with your weight loss.And remember its not always about the numbers on the scale, but how you feel overall and how your clothes fit on you. Make sure you take measurements of yourself. Sometimes one may lose inches rather than lbs.