It is very interesting that he won't eat organ meats due to their carb content.  What I'm finding is that all protein eaten is converted to glucose at the rate of about 58%.  This was demonstrated to me by the drop in blood glucose levels when I changed my diet from 32% protein to less than 20% protein.

My original protein consumption was about 150g/day.  This converted to 87g of glucose and you could see my blood glucose level rise about 25 points over a three hour period and then it would decline to an average resting value over the next 18 hours or so before finally dropping to the original starting level a couple of hours before I ate my next daily meal.

When I cut the protein to 90g/day (I raised fat to keep calories the same) there is 52g glucose created and my blood glucose levels only rise 15 points before dropping back to the average resting value.

What is interesting is that the drop in protein from 150g/day to 90g/day is a 40% drop. The "calculated" drop in glucose manufactured from protein from 87g to 52g is a 40% drop.  The measured change in the rise of blood glucose directly after eating a meal from 25 points to 15 points is also a 40% drop - so all these numbers track exactly.  I keep very accurate records and measure my blood glucose every hour when I'm awake and every time I awaken during the night, and yes my fingers are shredded and painful but without doing this you'll never see these relationships.

Lex

I agree. In fact, carnivorous animals are well-known to prefer the organ-meats over muscle-meats, as the dominant animal in a pack gets first choice of organ-meats before others. I also recall zoo-directors pointing out that some carnivores in zoos which had no access to raw organ-meats would often develop fertility problems over time(if they were raised on such an organ-free diet from birth). I wouldn't be surprised if this and last century's rise in human infertility is partially the result of steering away from organ-meats in the diet.

Re 90g:- I was under the impression that the absolute lower limit for protein-intake was 100g a day, and that anything below that would destroy the muscles etc. (though some argue that the limit is higher).