Todd Moody wrote:
> > Divide the # of calories by 4 and you get a figure which is the number of
> > grams of carbs.
>
> Should be 4.5 calories per gram of digestible carb or protein,
> and twice that for fat.
Not sure what the exact number for carbs is, but for protein it's 3.75 calories
per gram, not 4.5. Sorry, don't remember the source. I think 4.5 came about as
a simple approximation ("it's half of fat calories").

Ilya