>My opinion:  Our modern bodies are too accustomed to burning glycogen
>and forcing it to burn fat the way our ancestors did will take time and
>effort.  It's easy for the body to get to the glycogen, getting to the
>fat requires a little work.

    I've heard this many times by now, and it certainly sounds plausible,
but I think an important question for someone in Marcia's position is: how
long do you give your body to adjust in this way before concluding that
something's not optimal about the diet itself? In your case it was 3 weeks.
For other people (to pick a well-known testimonial, Ray) it happens much
more quickly.
    Any thoughts? Are there any references to clinical info on this "enzyme
change-over"?

TM