I'm a fan of the blood type diet but one thing worries me. Dr. D'Adamo says each blood type evolved thousands of years ago to digest a particular diet and I believe him, but isn't evolution an ongoing process? If a person shields their body from any food that it finds stressful isn't that going to deprive it of the chance to adapt and evolve to a wider diet? From what Dr. D'Adamo has written, it sounds as though blood-type A people adapted rapidly to a diet of mainly grains after aeons in which human beings got their protein from meat. Surely if generations of type A's ate shellfish, for example, type A's would start being born who did fine with shellfish? I'm thinking of food that occurrs naturally in nature here, not man-made pollutants like chemical pesticides etc. which I don't think anyone could adapt to. Also what do 'secretory insufficiency' and 'flocculates serum proteins or precipitates something else' mean? Congratulations on your wonderful column! Olympia

Thank you, Olympia! There's no need to fear that lack of stress will stunt our evolution, we have plenty (;-)) but rather that too much stress lays the foundation for disease and shortens our lives. Actually, he theorizes that the earliest peoples were predominantly type O ~ but type A and B were present, if in smaller numbers. As large land animals were hunted out and agriculture developed, the idea goes, those who could better handle a diet of grains, vegetables and little meat flourished. A nomadic herding existence in high altitudes suited other types better than lowland farming. Environment did not create type, it only limited or abetted its population growth. Yes, people swiftly learned to depend upon agriculture for a steady food supply, but that is not to say every type prospered upon such a diet. I can tell you personally that here we are in the 21st Century, yet I never adapted to grains! When I stopped eating them (especially wheat), and started eating red meat, my health improved greatly. Some foods stimulate antibodies by virtue of their "alien blood type" qualities, and shellfish is one of those foods for As. "Secretory insufficiency" refers to lower levels of protein-digestive or other secretions ~ therefore that food is not recommended for that time. Flocculation and precipitation are when the red blood cells clump up together in response to a substance toxic to the cells. Hope this helps, and thank you again for your kind remarks!

I have been having allergy for 8 years. I finished just about all allerry medication now nothing is working . Finally last 2 weeks I have been following blood type " O " diate from your book and I am doing much batter. The question I have is in your diats amount of water for week 4-7 serving 8 oz per week that is 8 oz maximum per day. Is this correct. Please advise me on this matter. I will be very glad. Thank you very much. Anwar

Great news, Anwar!! That text should read, 4-7 servings per day, not per week. Thank you for writing! :-)

i was wondering if there is any relationship between potatoes and taros? as an O type, i can eat sweet potatoes (with no concern), but was wondering about the taro. is this okay? thank you.....and btw...i love the diet and the book.... jake

Glad you are enjoying the diet, Jake. Use the

Hello I am taking the Polyflora 'O' professional probiotic, the polyvite 'O' professional multivitamin and the phytocal 'O' mineral formula. I also follow the type O blood diet. I would like to know if I could safely use the harmonia ABO friendly green drink as a breakfast drink on top of what I do currently? Also can I use the deflect 'O' lectin blocker as a sort of an "after the fact pill" that will heal my body if I occasionally eat an avoid type food? Silvia

Sure, absolutely. Yes to both! Deflect-O® will help by luring away lectins that would otherwise have attached to your tissues. It does help heal by scrubbing old, lectin-damaged cells over time. :-)

we've found out we're 0 negative. What relevance does +ve & -ve have in the d'adamo scheme? mossey

For Rh-negative Os and Bs, it means a bit more meat and a bit less grain than the Rh-positives of either type. The difference is around one serving per week for each category.

I"m brazilian. I"m not sure about the classification of my ancestries, because my ancestries came from Italy, Portugal and Brazil. Are they classified as africans, caucasians or asiatics? I hope your answer. Thanks a lot. Hilson

Hello, Hilson ~ That's hard to say. One way to determine this is to do a little family research, and see how far back your various European ancestries can be traced. Without knowing your family history, it sounds as if Caucasian is probably your predominant bloodline, so go with that one if nothing else presents itself definitively. It is not a major consideration with the diet, just a refining guideline. If you're still unsure but feel that Caucasian does not fit, drop me another line with more details! :-)

and many thanks to ALL for writing!!