Atkins diet
I have followed the Atkins diet prior to surgery, but agree with several of the posts that it focuses too much on just proteins and leaves out fruits and vegetables which have low glycemic loads. I now follow an eating program that is somewhere between Atkins and South Beach. I don't eat many grains or starcy carbs because they make me hungry and cause me to get hypoglycemic. I use them more as a condiment. I eat lots of lean protein, vegetables, nonfat dairy, nuts, and fruit. I also enjoy beans in moderation. This allows me a lot more choice than Atkins, which got really old after a short time for me. I stay away from high fat proteins since lots of saturated fat is not good for you, and I rarely eat fried food, since those aren't healthy either. Other than that I don't worry about fats. The fats I eat are healthy ones like olive oil. I'm three years out, and have recently lost 6 pounds after getting back to this type of eating and exercise. I feel much better and less hungry as long as I eat this way. I also don't get tired of it because there is so much more I can eat than on Atkins.
I suggest you buy a book on Glycemic Index and Glycemic Loads of different foods and use that to choose foods that don't raise your blood sugar. That has helped me a great deal.
Take a look at the following books. They will explain about Glycemic Loads. This is the basis of the Southbeach diet and other low carb diets. You want to manage not just your calories but your blood sugar because if you can keep you blood sugar relatively level, you will be less hungry and it will make it easier to manage your caloric intake!
The Glycemic Load Diet by Robert Thompson, MD
The Easy GL Diet Handbook by Dr. Fedon Alexander Lindberg