"calories are calories" - there is some truth to that. I get *so* tired of seeing all of these TV commercials "only 6 grams of fat" or "only 8 grams of fat", trust me on this, I can design meals with very low fat that pack on the flab like nobodies business /forums/images/graemlins/smile.gif
In general, calories are calories, but the Adkins diets works off a "wrinkle". That wrinkle is, if you don't give your body any carbs, it will convert to burning fat instead. Toss that muffin, burn some spare tire /forums/images/graemlins/smile.gif And while I've spent most of my life trying *gain* weight, I have overdone it and the Adkins diet will darn sure burn fat, and unlike other diets (for me and most others) it does not burn your lean muscle weight.
But it is a tough diet to stay on, and there is a school of thought that once you go off of the diet, the weight comes back pretty easily unless you are careful.
As for the medical, I'm firmly in the camp that does not believe all of the scare-stuff that doctors used to say about this diet. The medical community is *real* prone to the Not Invented Here syndrome. There is more and more evidence that fat isn't the main culprit in Americans' poor diets, but refined carbs are.
Here is a good little program for counting/tracking fat/carb/proteins....
http://www.terzon.com/eatometer