<<Disclaimer: Verify this information before applying it to your situation.>> Hi All-- Regarding the blood type survey someone is doing...a friend was telling me about the book out recently concerning Blood Type Diets. The premise is that a person's blood type is evolutionary evidence of their ancestry, and thus reflects how their metabolism has evolved to handle food groups. I haven't read the book myself, but apparently it claims that Type O's are the "oldest" genes, who evolved from the Hunter-Gatherer stock, and are best suited to eat meats and veggies and fruits--and guess what--do not tolerate Wheat!! While Type A's are a newer line of genes, who evolved after mankind had become agrarian, and these people are best suited to eat grains! Interesting, eh?? The small sample you have gathered thus far seems to bear this idea out. I'm incidentally Type O, allergic to gluten, and have Crohn's disease, which the author of the book claims is more prominent in type O's. Don't have any idea how good a weight-loss plan this book is, but it sounds interesting anyway. Julie (Buried in 20 inches of snow in Boston on April Fool"s Day)