Silverback is right. What works for one may not work for others.
I read an article 2 years ago about this guy who was in his early 40s. He was overweight by about 100 #s or so, but he was very physically fit. He did tri-athalons and such. It didn't make any sense as to why he weighed what he did based on his diet and physical fitness level/activities.
Basically, after any workout his body went back into conserve mode. It only burned energy when neccassary.
My personal experience - Atkins works, but Im addicted to carbs. I get crazy mood swings when I dont have a good supply of carbs daily or even every other day. It makes it hard to keep personal relationships with others, especially my wife, because I might go off at the drop of a hat and it may have been really uncalled for. So I stay away from low carb diets for a long period of time. I might cycle carb intake for a few days, such as 2 days of no carbs, and 1 day of 50 to 100 grams of carbs / day and then back to the no carbs. I can do this for about a week or two before I have to take in a larger amount.
I do find that if I do my cardio at least 3 times a week AND workout 2 to 3 times / week, I get much better results and big ass muscles.
Im also more likely to hit some juice if needed to get that aftermarket edge to losing some wieght/gaining some mass. Im not a body builder, nor do I have the patience and desire for it. I just want to maintain a decent body. I don't want my wife looking at me and thinking, "Damn your ugly, but fuck your a fat ass!" So I gotta watch the weight.
My cars on juice, and damnit, I should be too!