lil brown bat

Cite please? Here's some of mine:

http://www.acu-cell.com/btd.html

"Of course there are people who claim that since following the "eat-right-4-your-type'' recommendations
they had lost some weight, or otherwise felt better, however when asked about any specific changes
made, they invariably consisted of lifestyle changes that are universally considered to be beneficial -
regardless of someone's blood type - such as cutting out junk food, and/or eliminating foods which
either cause, or have an unfavorable impact on specific medical problems one is suffering from."

http://www.quackwatch.org/04ConsumerEducation/NegativeBR/d'adamo.html

"It may well turn out that there are important interactions with between certain foods and one's blood type. D'Adamo, unfortunately, offers little in the way of scientific evidence, relying instead on a collection of anecdotal reports and case histories. His speculation that the one gene responsible the ABO blood type could exert such a dominant influence over everything else is unable to stand on its own merits. In the end, D'Adamo adds the caveat that individual variations still occur within blood types, so you shouldn't expect all of his recommendations to apply to you. It's nice to have it both ways, especially where book sales are involved."

http://earthsave.org/news/bloodtyp.htm

"One of the book's most disturbing characteristics is the frightening images that the author calls forth without providing scientific documentation. For example, D'Adamo hangs much of his theory on the action of lectins, proteins found on the surface of certain foods that can cause various molecules and some types of cells to stick together. He blames lectins for serious disruptions throughout the body, from agglutination of the blood cells to cirrhosis and kidney failure...If one is going to make a statement like that - and publish it in a book destined for the New York Times bestseller list and intended to change the eating habits of a nation - I believe the author is obligated to present solid scientific evidence of supporting their assertions, which D'Adamo repeatedly fails to do."

http://skepdic.com/bloodtypediet.html

"There is no reasonable scientific basis for the claim that blood type should determine one's diet, though [D'Adamo] claims to have collected "over 1,000 scientific articles on blood types and their correlations to disease, biochemistry, nutrition, and anthropology."* Even so, he's never done a controlled study on blood type diets. Yet, he claims that blood type determines body chemistry to such an extent that those with type A blood should go vegetarian and meditate, those with type O should eliminate grains and do aerobics. He suggest similar nonsense for types B and AB."

You can label it however you want. It's still not valid.

Going to be like that, is it? Then how about this: Please... don't recommend fad diets (or fad whatever-you-wanna-callits) when asked for advice on diet and nutrition.