1.

An associate of mine, an amateur skeptic with professional zeal, says that without telling me he was acting on my recommendation to look into the Eat Right 4 Your Blood Type books, found that Dr. D'Adamo denies wheat to all four blood types in his recommendations, a little feature I hadn't picked up on. "Therefore, he's just another quack, and can be disregarded." While even if the 4-type denial is true, which I haven't checked out for myself yet, having just had this conversation, I feel a little more sympathy for it, being someone with celiac sprue. My associate, however, won't admit he has psoriasis! He said if I used that word again in talking with him, he would never communicate with me again. I was hoping to edge him toward some empirical improvement with the blood type diet, but that was ended by the hammer-fall of his judgment, at least for the present. -Peter

Hi Peter,

I'd have your friend check the book again. His calculations are off.

If we look at whole wheat

Total incidence of type A secretors = 34.2%
Total incidence of type AB secretors = 1.7%

Total percentage of the population in which whole wheat is at least 'neutral' is 36%

If we look at spelt wheat

To find the total percentage of the population in which spelt wheat is a least 'neutral' (an avoid only for type O non-secretors; about 8% of the population) is even easier. Spelt has a higher mucopolysaccharide and lower gluten content that whole wheat, which may help modulate its pro-inflammatory proteins a bit, I think.

Subtracting that serotype leaves about 92% of the population (perhaps; there are other possible reasons against) who can use spelt type wheat.

However, these numbers may be optimistic: evidence suggests that our sensitivity to gluten containing foods is on the rise.

I think we will see many possible correlations between the diseases of industrialized society (such as diabetes and obesity) and their current wheat and corn based diets.

2.

I have happened across a book I think will be of interest to you. Have never seen a reference to this on the message board. It's called 'Eat to Live', by Joel Fuhrman M.D. The book is on diet and weight loss but has a 7 page piece - critique of the BTD. At least this guy did a bit of research. -Thanks Bruce.

Hi Bruce,

Maybe you should bring it up on the Forums and see what kind of discussion ensues.

I've don't know Dr. Fuhrman and have not come across his name in any of the research areas of biology and genetics that I study. I'd like to see him stick to his own projects rather than find the time to inveigle his readers with tales and criticisms of his competitors.

There was a wonderful TV program on Isaac Newton the other night. It seemed (at least to me) that every time Newton announced a new discovery --the polychromatic nature of light, the reflecting telescope, Calculus-- this other guy (whose name I forgot) would write a critique simultaneously claiming that Newton was wrong and he that had discovered this earlier anyway. Newton apparently got seriously bent out of shape by these types of shenanigans.

Stephen Jay Gould had an interesting take on this, as part of a response to criticisms of his theory of 'Punctuated Equilibrium' (1):

THE MOST UNKINDEST CUT OF ALL. If none of the foregoing charges can bear scrutiny, strategists of personal denigration still hold an old and conventional tactic in reserve: they can proclaim a despised theory both trivial and devoid of content. This charge is so distasteful to any intellectual that one might wonder why detractors don't try such a tactic more often, and right up front at the outset. But I think we can identify a solution: the "triviality caper" tends to backfire and to hoist a critic with his own petard—for if the idea you hate is so trivial, then why bother to refute it with such intensity? Leave the idea strictly alone and it will surely go away all by itself. Why fulminate against tongue piercing, goldfish swallowing, skateboarding, or any other transient fad with no possible staying power?

Gerhard Uhlenbruck, one of our IfHI speakers, says it differently:

Never chase a lie. Let it alone, and it will run itself to death.(2)

I have my own aphorism to add:

Negative reviews of popular diet books are too often found inside of other popular diet books.

I'm actually flattered that someone would go to the trouble of writing a seven page refutation of my theory. However, I don't have the time or energy to write a seven page reponse, so this must do.

But finally, I leave you with the words of my Tang Soo Do Sa Bom:

You want to show me something you've read? Great. Get out there on the floor and show me.

(1) Stephen Gould 'The Structure of Evolutionary Thinking' (2002) Belknap, Harvard Unveristy Press.

(2) Gerhard Uhlenbruck on The Individualist.