BlueSmoke! I'm been searching for information about the body's efficiency of using protein or fat vs. the efficiency of carbs.

I've always thought that the body is about 50% efficient in utilizing all of the potential energy (i.e. calories) in proteins and fat. And close to 100% in utilizing carbs.

From a molecular stand point, only a couple of bonds of the carb need to be broken to break it down into glucose. And its known that glucose is quickly used in the body. As compared to more complex reactions for protein and fat breakdown. What's not used is thrown out (in the usual way).

In short, a CALORIE is not always a CALORIE!!

If you have any studies or other information about this efficency, I would be very interested.

Thanks,
-Kragness