Easting fat:
I've heard Sears says you won't burn fat unless you eat some fat. Comments?

There is a maximum protein intake that the body can cope with due o the
liver's maximum capacity to process urea- once you hit this you feel crook.
This is one of the big problems with high protein diets- I've only just
started reading Protein Power and it hasn't been overtly stated yet. Loren
Cordain actually mentioned this in his lecture in Sydney last October- this
will be the published article in American Journal of Clinical Nutrition
whenever that comes out .Title: "Plant to animal subsistence ratios and
macronutrient energy estimations in world wide hunter-gatherer diets".

Here are some comments from Professor Cordain that I've snipped:
"It is not surprising you could not consume 500 gms of lean meat -
you were approaching the ability of your liver to synthesize urea (dietary
protein produces Nitrogen which is toxic unless eliminated).  The rate
limiting enzymes for the synthesis of urea are not infinitely upregulatable
in the face of increasing diertary protein - hence the feelings of "unease"
as you were becoming hyperammonemic and hyperaminoacidemic.
I would predict such a diet would indeed impair your training."

"it should be 65% energy from animal foods, 35% from fruits,
vegetables and nuts."


Dr Ben Balzer, family physician.