I tried atkins a few years ago, I lost a bit of weight but it was so hard sticking to the eating plan. There's only so much eggs and bacon you can eat for breakfast etc.
The Atkins diet is a low carbohydrate, high protein diet. It is credited to Dr. Robert Atkins and is described fully in his book "Dr Atkins New Diet Revolution". As with any diet it is important to restrict calorie intake and increase calorie burning.
I tried the atkins diet and I had lost some weight but I had gotten really sick from it. My doctor actually told me to get off the diet. I don't suggest going on this diet without talking to your doctor first.