i looked around for critiques of the blood type diet and it seems that the biggest problem other docs have with it is that peter d'adamo is making claims (as scientific fact) that he does not reference. here then is his take on protein digestion from the book 'live right 4 your type':
"...Intestinal alkaline phosphatase is an enzyme manufactured in the small intestine, which, among its other functions, aids the digestion of animal proteins and fat.
Recent studies clearly show that type Os - and to a lesser degree, type Bs - have high levels of intestinal alkaline phosphatase, and type As secrete almost no intestinal alkaline phosphatase, and whatever little they do secrete is inactivated by their own A antigen. This is a convincing reason why type As should stick to low-protein diets...
Evidence suggests that intestinal alkaline phosphatase, in addition to enhancing fat breakdown, also enhances the absorbtion of calcium..."
So there you have it. EDIT: he also has a reference number at the end for three pieces, which i've included at the end. maybe he is trying to answer his critics with this book and the encyclopedia one.
ManBeast, would you say you put on muscle more easily than the average person or not?
-5
refs:
agbedana, e. o. and m. h. yeldu. "serum levels of human alkaline phospatase activities in relation to AB0 blood groups and secretor phenotypes." Afr J Med Sci, Dec 1996; 25(4): pp. 327-29
domar, U., K. Hirano,... "serum levels of human alkaline phosphatase isozymes in relation to blood groups."Clin Chim Acta, Dec 16, 1991; 203(2-3): pp. 305-13
mehta, n. ... "total serum alkaline phosphotase (SAP) and serum cholesterol in relation to secretor status and blood group in myocardial infraction patients. Indian Heart, March 1989; 41(2): pp. 82-85