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D'Adamo Personalized Nutrition - Blood Type Diet

Welcome to the Blood Type Diet and to Personalized Living. Here's a list of frequently asked questions, which you may find helpful.


Blood Type Diet-related Questions

[ Click on the question to expand and see the anwser ]

Q:Where do I begin?

A: You begin by finding your blood type. Click here if you don't know it. If you are new to the entire concept, you can start here.

Q: I know my blood type already and I see Dr. Peter D'Adamo has written many books. Which one should I read first?

A: It depends what kind of challenge you are facing. For example, if you are trying to lose weight or simply want to remain in good health, Eat Right For Your Type is a great entry point for overall health. If you are facing a more challenging health condition, Dr Peter D'Adamo has written 8 different books that focus on Diabetes, Cardiovascular disease, Cancer, Menopause, Aging, Allergies, Arthritis, and Fatigue. In addition, he also wrote Change Your Genetic Destiny for determining your GenoType at home. It gives readers a complete picture of how their GenoType evolved, their predisposition for weight loss/gain, immune function, disease propensity, and a comprehensive diet, exercise and life style profile tailored to fit their type.

Q: I love the idea of the Blood Type Diet. It makes a lot of sense in a lot of ways. But, it doesn't seem like it takes into consideration how these foods react in the gut, such as gluten, and sometimes it just isn't consistent. It will tell me to stay away from sprouted wheat, but says I can have essene bread which has sprouted wheat in it. Or it will tell me to stay away from gluten, but tells me I can have rye bread (and essene bread), which has gluten in it.

A: It is confusing about the wheat issue, we now recommend that you stay away from all wheat products. The companies have added so much protein to the grains it has made eating wheat dangerous for all the blood types. There are so many great grains that you can have and you don't have to worry about the gluten issue. The list of grains or breads is Manna bread, millet, spelt, oat and quinoa flour and products. Check your food list for grains that are right for you.

Q: How can I find a list of foods that are right for my type or check the food value of a certain food?

A: You can refer to your Blood Type food list in Eat Right for Your Type, or in the blood type specific individualized books. You can also look at your food values in the Eat Right 4 Your Type app, available both for the iPhone and the Android. And you can refer TypeBase here at which provides a comprehensive overview of foods.

Q: Hi, I'd like to start this program but I'm confused on which supplements I should take. If someone could please guide me as to what supplements would be important for me.

A: For fast advice on choosing the best formulas, try Dr. D’Adamo’s free Supplement Advisor. This easy-to-use web-based program evaluates your specific priorities and health data to recommend the supplement formulas that best suit your needs.

The Daily Essentials Pack [O | A | B | AB] is also a good start. And the Protein Blend Powder [O | A | B | AB] will help fuel and boost energy levels while the Pocket Book Guides [O | A | B | AB] will help you to keep on the right path with foods.

Most people will often start the Blood Type Diet diet by changing the foods they are eating. Start off slow by adding 2 beneficial foods and removing 2 avoid foods and you will start to see changes. The best way to make a meal plan is to take your normal recipes and start changing the ingredients to ones that are blood type friendly.

Learn more on Getting Started here.

Q: What makes a food a Beneficial?

A: Beneficial foods are foods that do not agglutinate a particular blood type or raise bowel toxicity in that blood type. Beneficials protect against some disease known for a preference in a particular blood type. Beneficials also contain an enzyme known to react positively with the antigen of that blood type.

Q: What does Neutral mean?

A: The three categories are designed to focus on the foods which are most and least beneficial to you, according to your blood type reaction to certain lectins.  The Beneficial foods act as a medicine: the Avoids foods act as a poison.  The Neutral foods simply act as foods.  While the Neutral foods may not have the special health benefits of some other foods, they're certainly good for you in the sense that they contain many nutrients that your body needs.  (Pg 342 in the Eat Right 4 Your Type Book)

Q: Just wanting to know what the effects are and why it is an avoid food for me.

A: Foods are Avoids for different reasons. This can be because they contain lectins that are not good for your blood type.

Q: What is compliance?

A: Here are some guidelines for compliance:

  • If you are recovering from an illness or desire weight loss, then 80%-100% of your food choices should be highly Beneficial.
  • If you are a healthy individual over the age of 55, 80% of foods should be Beneficial.
  • If you are under 55 and healthy, 70% or more of your food choices should be Beneficial.
  • The remainder of your food choices should be Neutral with limited Avoids

Q: What are lectins?

A: A lectin is a type of molecule present in different types of plants, grains and animals. Essentially, lectins are present in most of the foods that we consume. Because lectins are similar in shape to certain antibodies, they can behave in a similar way, causing potentially dangerous reactions with our blood type antigens — depending on one's blood type.

Remember the agglutination reaction? When you eat a food containing lectins that are not compatible with your blood type, that same agglutination reaction occurs on a much smaller scale. Now, this does not mean that eating the wrong food could cause an immediate deadly reaction, but eating foods with the wrong lectins over a lifetime can increase your risk for different diseases, cause premature aging and simply make you feel bad! On the flip side, eating the right foods for your blood type can actually lower your risk for disease, slow down the aging process and make you feel like a million dollars!

Learn more in our Understanding Lectins video.

Q: I don't see a food on the food list, is it good for me?

A: The current information on food values can be found on the website's Food Value lookup. This tool allows you to look up various foods and their values. If it's not listed, consider it an Unknown.

Q: Do we count calories with the Blood Type and GenoType Diets?

A: You don't have to worry about calorie counting when you follow the food portion recommendations in the books with your recommended exercise program. It's based on portion control and common sense, not calorie control.

Q: What is the difference between a secretor and non-secretor?

A: A secretor is defined as a person who secretes his or her blood type antigens into body fluids and secretions like the saliva in your mouth, the mucus in your digestive tract and respiratory cavities, etc.  A non-secretor on the other hand puts little to none of his or her blood type into these same fluids. As a general rule, in the US about 20% of the population is non-secretor. Knowing your secretor status allows you to refine your diet.

Learn more in our Lectins: Secretor Status video.

Q: Does the RH factor matter with the Blood Type Diet?

A: The Blood Type Diet is not affected by the RH factor (+/-) but when you are figuring out your GenoType you need this information.

Q: Why are foods valued differently when made into a different product? Example: Olive oil is beneficial and olives are an avoid for some types.

A: The processing of foods changes the food value because in most cases the lectin is removed.

Q: Are D'Adamo Personalized Nutrition supplements FDA approved?

A:Vitamin products are regulated by FDA as "Dietary Supplements." The law defines dietary supplements, in part, as products taken by mouth that contain a "dietary ingredient" intended to supplement the diet. As required by the FDA, our supplements are all produced according to Good Manufacturing Practice and are labeled accordingly. Further, D'Adamo Personalized Nutrition is committed to excellence. Learn more here.

Q: I'm going to start the blood type diet. What is the ratio of foods to eat?