# Are certain food more digestable based on blood type? **URL:** \ **Category:** Factual Questions\ **Created:** [July 18, 2003, 1:51pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388 "2003-07-18T13:51:37Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![parlo\_americano](https://avatars.discourse-cdn.com/v4/letter/p/b19c9b/32.png) [@parlo\_americano](https://boards.straightdope.com/u/parlo_americano)\ **Post date:** [July 18, 2003, 1:51pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/1 "2003-07-18T13:51:37Z")
Firstly, I’ve already searched the archives and this subject has been brought up before but they spoke about the diet aspect of it and I want to know is the premise true. A diet book which is obviously selling all the products and booklets to make this work…“Eat right 4 your type” by Peter D’Adamo… makes the claim that your blood type reacts to the lectins in food aiding or hindering digestion. \*\*“Many food lectins have characteristics that are close enough to a certain blood type antigen to make it an ‘enemy’ to another. For example, milk has B-like qualities; if a person with Type A blood drinks it, their system will immediately start the agglutination process in order to reject it.” “Certain foods contain toxic lectins that metabolize poorly for certain blood types and well for others.”\*\* Is there any truth to this? Does my AB blood type prefer turkey to chicken? Are some foods then not properly digested and there is no benefit to eating them? ---
**Author:** ![Ice\_Wolf](https://avatars.discourse-cdn.com/v4/letter/i/dfb087/32.png) [@Ice\_Wolf](https://boards.straightdope.com/u/Ice_Wolf)\ **Post date:** [July 18, 2003, 2:02pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/2 "2003-07-18T14:02:09Z")
Here’s [one answer](http://xtramsn.co.nz/health/0,,8158-1922459,00.html) from from the Auckland Allergy Clinic. > [@](#): > > I do not believe your blood group could dictate what foods you are allergic to. This is more dicated by your environment and eating habits (foods you commonly eat, especially at an early age). For example, mustard allergy is common in France and India because it is a commonly used spice at a very early age in these countries. ---
**Author:** ![Lemur866](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lemur866/32/434_2.png) [@Lemur866](https://boards.straightdope.com/u/Lemur866)\ **Post date:** [July 18, 2003, 5:21pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/3 "2003-07-18T17:21:36Z")
This is just another quack dietary fad. It makes as much sense as a diet tailored for your astrological sign. ---
**Author:** ![Ike\_Witt](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/ike_witt/32/283_2.png) [@Ike\_Witt](https://boards.straightdope.com/u/Ike_Witt)\ **Post date:** [July 18, 2003, 5:25pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/4 "2003-07-18T17:25:57Z")
> [@](#): > > \*Originally posted by Lemur866 \* > \*\*It makes as much sense as a diet tailored for your astrological sign. \*\* I’ll give you a nod in the introduction, after I’ve written this soon to be best seller. ---
**Author:** ![Lemur866](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lemur866/32/434_2.png) [@Lemur866](https://boards.straightdope.com/u/Lemur866)\ **Post date:** [July 18, 2003, 11:02pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/5 "2003-07-18T23:02:02Z")
Hey, as long as you agree to endorse my low-fat high-fiber all Tarot card diet… ---
**Author:** ![SnoopyFan](https://avatars.discourse-cdn.com/v4/letter/s/d07c76/32.png) [@SnoopyFan](https://boards.straightdope.com/u/SnoopyFan)\ **Post date:** [July 18, 2003, 11:24pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/6 "2003-07-18T23:24:06Z")
> [@](#): > > \*Originally posted by adam yax \* > \*\*I’ll give you a nod in the introduction, after I’ve written this soon to be best seller. \*\* I’m actually surprised nobody HAS written an astrology-based diet book yet. Hmm lemme look into my crystal ball here: **Virgos** are uptight and high strung. Thus, they should eat lots of carbs and turkey, which will mellow them out because they’ll be sleepy a lot. **Pisces** and **Cancer** people are supposedly moody, so they need a low-carb diet. This will prevent wild fluctuations in the blood sugar and thus keep their emotions on an even keel. Oops. Someone already beat me to it: [http://www.astrologyguidance.com/store/books/astrdiet.htm](http://www.astrologyguidance.com/store/books/astrdiet.htm) [http://www.vny.com/astrology/diet/default.htm](http://www.vny.com/astrology/diet/default.htm) ---
**Author:** ![dwyr](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/dwyr/32/363_2.png) [@dwyr](https://boards.straightdope.com/u/dwyr)\ **Post date:** [July 18, 2003, 11:54pm UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/7 "2003-07-18T23:54:59Z")
While lectins **are** used in blood banks because they mimic certain antigens, in order for them to cause agglutination of rbcs they must be introduced, whole, into the bloodstream. I find it hard to believe they could survive the digestion process intact enough to do any such thing. ---
**Author:** ![parlo\_americano](https://avatars.discourse-cdn.com/v4/letter/p/b19c9b/32.png) [@parlo\_americano](https://boards.straightdope.com/u/parlo_americano)\ **Post date:** [July 19, 2003, 11:53am UTC](https://boards.straightdope.com/t/are-certain-food-more-digestable-based-on-blood-type/189388/8 "2003-07-19T11:53:12Z")
LOL Thanks for the new diet suggestions… 😃 And Dwyr thanks for the info.