Blood Type Diet Chart – Type O

By: Michael Lam, MD, MPH



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Your Blood Type Diet Chart

High protein information on the blood type diet chartType O blood often signifies a physiology which is uniquely suited to processing animal proteins. As a result of this efficiency, the optimal diet for those with Type O blood features a lot of meat, poultry, and seafood. These high-quality proteins are efficiently processed and converted into nutrition for the body to provide energy and ensure the healthy function of the body’s many different systems. On the other hand, gluten in many grain products, can antagonize the body and throw a wrench in its works, creating stress on the body and creating imbalances.

Following the correct blood type diet for Type O blood helps ensure the body’s equilibrium and functioning are maintained. Find out which foods are best for the Type O blood type diet and which to avoid using the chart below.

Blood Type Diet Chart – Blood Type O
Characteristics of Type O
Best on High Protein Diet

  1. Thrive on intense physical exercise and animal proteins
  2. Do not do well with dairy and grain products
  3. Hardy digestive tract
  4. The leading factor in weight gain for Type Os is the gluten found in wheat germ and whole wheat
    products.
  5. Type O have a tendency to have low levels of thyroid hormone and unstable thyroid functions,
    which cause metabolic problems and weight gain.
  6. Type O have high stomach-acid content, can digest meat easily.
Type of Food Most Beneficial Food Allowed Food Not Allowed
Protein

Beef, lamb, mutton, veal, venison (The more stressful your job or demanding your exercise program, the higher the grade of protein you should eat)

Cod, herring, mackerel

Any meat except for those listed as not allowed (Type Os can efficiently digest and metabolize meats)

Any fish or seafood except for those listed as not allowed (Cold-water fish are excellent for Type Os. Many seafoods are also excellent sources of iodine, which regulates the thyroid function.)

Bacon, Ham, Goose, Pork

Barracuda, pickled herring, catfish, smoked salmon, caviar, octopus, conch

Dairy Butter, farmer, feta, mozzarella, goat cheese, soy milk (Type Os need to severely restrict the use of dairy products and eggs) All other dairy products and yogurts
Fat Olive oil, flaxseed oil Canola oil, sesame oil (Type Os respond well to oils) Corn oil, peanut oil, cottonseed oil, safflower oil
Nuts Pumpkin seeds, walnuts All kinds except those listed as not allowed (These foods should in no way take the place of high-protein meats, and they are high in fat especially if you are overweight.) Brazil, cashew, peanut, pistachios, poppy seeds
Beans Aduke beans, Azuki beans, Pinto beans, Black-eyed peas All kinds except those listed as not allowed Beans – copper, kidney, navy, tamarine. Lentils – domestic, green, red. (Type Os don’t utilize beans particularly well. They tend to make muscle tissue slightly less acidic and inhibit the metabolism of other nutrients.)
Grains Essene bread, Ezekiel bread Amaranth, barley, buckwheat, rice, kamut, kasha, millet, rye, spelt Corn, gluten, graham, wheat (bulgur, durum, sprouted, white and whole, germ and bran) farina, oat, seven-grains, or any products such as flour, bread and noodles made with these grain products (Type Os do not tolerate whole wheat products at all.)
Vegetables

Kale, collard greens, romaine lettuce, broccoli, spinach (These vegetables help blood clot, Type Os lack several clotting fractors and need vitamin K to assist in the process)

Artichoke, chicory, dandelion, garlic, horseradish, kale, okra, onions, parsley, parsnips, red peppers, sweet potatoes, pumpkin, seaweed, turnips

Tomatoes (This fruit agglutinate all blood types but Type Os.)

All kinds except those listed as not allowed

Brassica family: cabbage, Brussels sprouts, cauliflower, mustard greens (These vegetables inhibit the thyroid function for Type Os)

Alfalfa sprouts, shiitake mushrooms, fermented olives (These vegetables irritate the digestive tract and the high mold count can aggravate Type O hypersensitivity problems.)

Nightshades: eggplant, potatoes (These vegetables can cause arthritic conditions in Type Os)

Corn (This vegetable affect the production of insulin, often lead to obesity and diabetes for the Type Os.)

Avocado, leek

Fruits Plums, prunes, figs (Dark red, blue and purple fruits tend to cause an alkaline reaction the digestive tract, and therefore balance the high acidity of the Type Os digestive tract to reduce ulcers and irritations of the stomach lining.)

Grapefruit, most berries

All kinds except those listed as not allowed (Fruits are not only an important source of fiber, minerals and vitamins, but they can be an excellent alternative to bread and pasta for Type Os)

Melons, cantaloupe, honeydew (These fruits contain high mold counts which can aggravate Type Os hypersensitivity problems (allergies))

Oranges, tangerines and strawberries, blackberries, Rhubarb (These fruits are high in acid content which may irritate the acidic stomach of Type Os)

Coconut and coconut-containing products (Type Os are extremely sensitive to this fruit.)

Spices

Kelp-based seasonings, iodized salt (Rich source of Iodine to regulate the thyroid gland)

Parsley, curry, cayenne pepper (Soothing to the digestive tracts of Type Os)

White and black pepper, vinegar, capers, cinnamon, cornstarch, corn syrup, nutmeg, vanilla (Irritants to the Type O stomach)
Condiments Chocolate, honey, cocao Ketchup, pickles, mayonnaise, relish
Beverages Seltzer water, club soda and tea Wine Beer, coffee, distilled liquor, black tea

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139 Comments

  • K says:

    I find this list helpful, I have a more detailed one at home and the two are consistent. I am type O and have always struggled with acid reflux after eating grain, certain fruits, tomatoes, etc.
    Since I have been cutting out the avoid foods, I have started to feel better. I had bought gluten-free flour and baked bread with it. I still found that it gave me heartburn.. I have always struggled with dairy and cauliflower, and pastas and breads make me swell up and I feel tired after I eat them.
    I don’t love cutting out avocado, cinnamon or coffee. But if it’s going to make me feel 100% it’s worth a try!

    • Dorine Lam RDN says:

      Really appreciate your sharing of your experience with the blood type diet. Even though it is gluten-free flour, it is still made with wheat. It is the lectin in wheat that cause the problem.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Taylor says:

    This explains a lot regarding diet, I appreciate alcohol will never help with any diet. I like beer but can see that’s strictly off the list, can you recommend another type of drink other than wine which is least harmful for Type O’s? Gin & Tonic perhaps?

    • Dorine Lam RDN says:

      Unfortunately, all distilled liquor are out for Blood Type O. Wine is the only allowed alcoholic beverage for your blood type.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • typeOathlete says:

    It says barley and rye are allowed but gluten is not allowed? but barley and rye contain gluten

    • Dorine Lam RDN says:

      You are correct, both barley and rye have gluten, that’s why both barley and rye are allowed occasionally.
      This diet is based on a certain protein found in all foods call lectin, and how this lectin reacts to the blood that is specific for each blood type.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • AJ says:

    Hi, i am age 42 and blood type O+. I am regular at gym and taking 100 PERCENT ULTRA PURE WHEY PROTEIN ISOLATE, Gluten Free for 20 days now but haven’t put on weight but have little fat around my waist area so which protein do you refer or the one i am taking is good enough. Please advice

    • Dorine Lam RDN says:

      Whey protein is to be avoided for Blood Type O. Use other protein powder sources for protein that is allowed for your blood type.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • robin levitt says:

    I have been hearing about your plan for a long time and am taking some steps towards eating this way. My question is it feels like a lot to take on at once since many of my go to foods are on my do not eat list. IE. Shrimp, chicken, alcohol (usually just one-2drinks per week if that), peanuts. The wheat is fine to avoid the majority of the time. Do you have any suggestions on how to get started and how strict one needs to be to see results? My goals is to lose the weight i have been trying unsuccessfully to lose even with working out and being on Weightwatchers.

    • Dorine Lam RDN says:

      If you really want to see a good result, it is important to follow this diet very strictly for 1-2 months and if your health improved. Even to loose weight, it may help.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Michelle says:

    Hi Dr Lam, can a blood type o get away with not eating red meat? I have RA but I just don’t like red meat, the smell taste etc. is chicken or turkey a suitable alternative? Thanks

    • Dorine Lam RDN says:

      Yes, chicken or turkey are good alternatives.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • George Shoueiry says:

    I am Type O+, can I take Moringa?

    • Dorine Lam RDN says:

      Sorry, I don’t have information on Moringa.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Melanie P. says:

    I am confused by the recommendation to eat Ezekiel Bread, as they are whole wheat products, which Type Os should avoid. Is there any type of Ezekiel bread that only uses rice?

    • Dorine Lam RDN says:

      Ezekiel bread is made of wheat but sprouted. Once the grain has undergone the sprouting process, the lectin structure is also changed. That’s why the sprouted bread is allowed.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Leeana Hill says:

    I have recently been advised to go for a diet that is best for my blood type. I found this highly helpful in knowing what I should and should not eat. It was surprising to see that some of the food that I eat that cause heart burn are among the things I shouldn’t eat. It is also sad to see that some of the food I love are on that list as well but luckily there are plenty of food that I love that I can eat. This was a big help.

  • Chrissa Grant says:

    This explains so much!! I have ran two half marathons in the last two years and cannot figure out what is wrong me! Not losing weight, arthritis (I’m 38), depression, daily vomiting… The list goes on! I start each day with a peanut butter on whole wheat sandwich thinking this is good for me and all this time its been hurting me!

    • Kenzi Kahl says:

      Chrissa, I am 40 and have also run many half marathons in the past 2 years. Not sure about the feeling sick but FYI…I ALWAYS gain weight when training for a race. Strange because of all the extra exercise, but I’ve never actually lost weight during long distance training. I do lose weight with many short runs through the week tho. (3-5 miles 4x/week) Good luck!

  • Tosin says:

    @Dorine Lam RDN
    I think it would be awesome if you could provide 3 meal examples of what someone who is O+ should each for Breakfast, Lunch, and Dinner. Is that possible? Would be SUPER helpful.

    Thanks for creating this article. This has been an eye opener

  • Kamel says:

    I have a question
    What type of carbs is beneficial for O blood type people ?
    I work very long hours and head for the gym I’m trying to lose weight
    so in order to get energy I need carbs, which type of carbs would you recommend ?

    • Dorine Lam RDN says:

      In general blood Type O doesn’t do well with carbs. You can find more information on what kind of grains and starchy vegetables from my website on Blood Type O.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Jeanine Cooper says:

    I want to know if green peas, fresh or frozen, are okay for Type 0.

    Thank you.

    • Dorine Lam RDN says:

      Green peas, fresh or frozen are neutral for Type O.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Michael says:

    I have o- blood type and have been following this diet for over a year and must say that I’m very happy with the results. It really works with my blood type!! At first I did not want to quit drinking coffee but once I finally did it my blood pressure went down from 150 to 120 it was really emazing. Also once I put aside wheat products and dairy I lost my abdominal belly fat ( without going to gym ) only after two months and my skin complexion improved. In addition when I stopped consuming eggs my cholesterol level was restored to normal please give it a try your life will definitely change for better I promise you

    • sonali says:

      hey,did u stop having milk also?and if yes,did you add something else in your diet to replace dat nutrients?

  • RUEL BOWN says:

    For blood type O is Chia seed, hemp seed and flax seed OK?

  • Suzanne Martin says:

    Why is cinnamon not recommended for type O. ? I have been drinking hot water honey and cinnamon , thinking this is healthy. Thank you

    • Dorine Lam RDN says:

      Cinnamon and honey should be very healthy if you are not following the Blood Type Diet.
      This diet is based on a certain protein found in all foods call lectin, and how this lectin reacts to the blood that is specific for each blood type.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

    • Dorine Lam RDN says:

      Cinnamon and honey are health if you are not trying to follow the blood type diet. This diet is based on a certain protein found in all foods call lectin, and how this lectin reacts to the blood that is specific for each blood type.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Maria says:

    is chicken good for blood o+? thanks

  • Alicia Sanders says:

    Hi there. I’m a blood type O but I don’t understand why I can’t have avocados when they have so many health benefits?

    Also, I’m already small with a high metabolism- it’s hard for me to gain weight. Could my diet be the cause due to my thyroid being out of whack for eating certain incorrectly for my blood type?

    • Dorine Lam RDN says:

      You have some very good valid questions. The Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The diet is founded by Dr. Peter D’adamo. There are some principles in the blood type diet that are not accepted in conventional medicine and their recommendations. I.e. coconut and soy are some of these discrepancies.

      Some people are just naturally high in their metabolism. If you have hyperthyroid, then it would be difficult to gain weight also. Do follow up with your doctor.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Beth says:

    This answers a lot of things for me and confirms some things I figured out – I am type O – and found that for me to lose weight I had to do the low carb thing – stopped drinking milk – and now I see I need to cut a few other things out of my diet – cashews give me diarrhea, I can see this in my family as well. My father was type O and had a lot of digestive issues – always an upset stomach – he is gone, but man this would have helped him.

  • Robin says:

    What if you have ulcerative colitis, does the O blood type diet still hold true? What modification if any are necessary?

    • Dorine Lam RDN says:

      You have to ask your doctor and see what the foods you need to avoid are for ulcerative colitis.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Patrick says:

    Are these ok for blood type o?
    – Egg Whites
    – Fish oil

    • Dorine Lam RDN says:

      For Blood Type O:
      Egg white – occasionally
      Cod Liver Oil – neutral.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Patrick says:

    Are these ok for blood type o?
    -Banana
    -Oats (gluten free)
    -Carrots
    -Soy Sauce
    -Cinnamon Powder

    • Dorine Lam RDN says:

      For blood Type O diet:
      -Banana – neutral
      -Oats (gluten free) – some said it is neutral, some said to avoid – so best to take in moderation
      -Carrots – neutral
      -Soy Sauce – neutral
      -Cinnamon Powder – avoid

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • nkem matt says:

    Is unripe plantain and noodles good for blood type o+?

    • Dorine Lam RDN says:

      Blood type O is to avoid plantain, noodles made with wheat flour. Noodles made with rice flour is neutral for blood type O.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Connie Catharine says:

    I am type O. I have a shake every morning with whey and casein protein powder. As these are milk products I suppose they are not the best to be using. What protein powder would you recommend for a type O?
    Also, my go to snack is hummus. Since it is made of chick peas/garbonzo beans, I am thinking this may not be good for type O’s either. Correct?

    • Dorine Lam RDN says:

      Whey and casein protein powder is to be avoided for Blood Type O. You may want to search for an alternative source that is vegetable based or bone broth powder.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Bob says:

    I found the blood type diet December 20016. I had great results while sticking to the highly beneficial foods listed in Dr. D’Adamo book. Lately I’ve wanted to expand my diet. I began to read various web pages and found much incomplete and contradictory information. This page seem to be both incomplete and contradictory. For example which berry can a O+ eat?. Oats are not OK here but OK on other pages. Cucumbers never according to others here seems to suggest it’s OK. It seems every bodies on the band wagon, but not playing the same tune.

    • Dorine Lam RDN says:

      Avoid – strawberry, blackberry
      Neutral – blue berry, raspberry, boysenberry
      Oats – don’t know for sure, some say avoid, some say neutral as you stated. I would take 1-2x/week.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Velta says:

    This information was so extremely helpful in all aspects of my health and well being. Thank You, Thank You!!!

  • xjeanne says:

    what about almond milk and gluten free products in blood type O?

    • Dorine Lam RDN says:

      Almond milk is allowed. For blood type O, the only grain that is neutral or beneficial is rice. A few of other grains, including gluten free bread should be taken occasionally only. But Ezekiel bread is beneficial.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • xjeanne says:

    what about almond milk and gluten free products/

    • Dorine Lam RDN says:

      Almond milk is allowed. For blood type O, the only grain that is neutral or beneficial is rice. A few of other grains, including gluten free bread should be taken occasionally only. But Ezekiel bread is beneficial.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Yvette M Rogers says:

    I have O- blood type and suffer with psoriasis can the types of foods I’m eating be a cause?

    • Dorine Lam RDN says:

      It is possible, you may want to follow the avoid chart for your blood type O for a few weeks and see if your psoriasis improved. If there is no change, then you may want to keep a food journal and slowly eliminate the suspicious food that is causing your psoriasis.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • NAZAR KHAN says:

    Is Buffalo,s Milk good for O blood type?

    • Dorine Lam RDN says:

      Sorry, I don’t know whether buffalo milk is good for blood type O.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Alex says:

    What about quinoa? Should this be allowed for O positive blood type?

    • Dorine Lam RDN says:

      Quinoa is allowed occasionally for blood type O.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Candice says:

    I see that oranges are not good for our blood group,,,,yet I am allowed grapefruit and lemons,,,,,my question is what about naartjies and clemintines?

  • Lorraine Mitchell says:

    I have a highly sensitive system and have found that I somehow have preferred to eat the recommended foods as they seem more appealing. I had no idea that this was recommended and only found out my blood group today.
    thank you for this affirmation its just been tweaked. I find I also crave apple cider – is this an option?

  • sue cole says:

    i am finding this fascinating. need to change my ways.

  • Michelle says:

    Why milk? There is a new milk called Fairlane. Its cold filtered to remove lactose and has no artificial anything, less fat, less sugar, and more protein. Would this milk be except able as a replacement?

    • Dorine Lam RDN says:

      This diet is based on a certain protein found in all foods call lectin, and how this lectin reacts to the blood that are specific for each blood type. So it is not the lactose but the protein, ie casein.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionis

  • fabio says:

    In Italy this diet is presented by Dr. Mozzi, specifically for the 0 group I found two small differences with the list that you propose, Dr. Mozzi indicates how harmful the kamut and spelt, based on its experience confirms to me kamut and spelt that are good for the group 0?
    Whereas both the kamut that spelt contain gluten.

    • Dorine Lam RDN says:

      Yes, both kamut and spelt contain gluten.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Kathy Rhodes says:

    I understand that I should avoid “night shades” which include all peppers; however, red peppers are listed on my type o diet as most beneficial. Is there some reason for this inconsistency?

    • Dorine Lam RDN says:

      It is good to avoid night shades if you have lots of inflammation and pain in your joints. This has nothing to do with the Blood type Diet. This diet is based on a certain protein found in all foods call lectin, and how this lectin reacts to the blood that are specific for each blood type.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Tina says:

    hi,
    If some one has a stoma which has not a large bowl any more , and his blood is negative o does is that effect the kind off foods.
    if it is effect please what should he eat to have a right diet.
    thanks
    Tina

    • Dorine Lam RDN says:

      You better seek your doctor’s advice.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • fabio says:

    In Italy this diet is presented by Dr. Mozzi, specifically for the 0 group I found two small differences with the list that you propose, Dr. Mozzi indicates how harmful the kamut and spelt, based on its experience confirms to me kamut and spelt that are good for the group 0?

  • Kadi - Ann says:

    You didn’t talk about hypothyroidism. My mom suffers from it and would like to know how to adjust her diet.

  • sergio drago says:

    would like to have more information on blood type O

    • Dorine Lam RDN says:

      Dr Peter D’Adamo’s book on Eat Right For Your Blood Type has some recipes and menu plans.

      You have some very good valid questions. Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The diet is founded by Dr Peter D’adamo. There are some principles in the blood type diet that are not accepted in conventional medicine and their recommendations. Ie coconut and soy are some of these discrepancies.

      For blood type O – most important to avoid the following foods to lose weight: wheat (wheat and white flour products), corn, kidney beans, navy beans, lentils, cabbage, Brussels sprouts, cauliflower and mustard green.

      Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination.The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Also follow the following as a guide: Blood Type O, Metabolic Syndrome

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Ruby says:

    Hello…do seizure medications taken over a long period of time (say, 40+ years) affect the results of typing our blood?

  • dennis constantine says:

    I am 0+ blood type and have a moderately high glucose level (105) . . .
    Will this diet have a positive impact on reducing the blood sugar?
    If so, what is a good result expectation . . . ?

    Thank you

    • Dorine Lam RDN says:

      For Blood Type O, you should be eating more protein and vegetables, low on grain and fruits. That should help improve the blood sugar.

      Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Jacqueline Mokwena says:

    I am blood group O can i use the 3 day diet of boiled potato and plain yoghurt

    • Dorine Lam RDN says:

      Whatever diets work for you, you should continue.

      Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Heidi says:

    What happens if blood O consume dairy?

    • Dorine Lam RDN says:

      You have some very good valid questions. Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The diet is founded by Dr Peter D’adamo. There are some principles in the blood type diet that are not accepted in conventional medicine and their recommendations. For example coconut and soy are some of these discrepancies.

      The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Malama Ng'ona says:

    I am blood type O.

    • Dorine Lam RDN says:

      For blood type O – most important to avoid the following foods to lose weight: wheat (wheat and white flour products), corn, kidney beans, navy beans, lentils, cabbage, Brussels sprouts, cauliflower and mustard green.

      The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Also follow the following as a guide:Blood Type O, Metabolic Syndrome

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Baguma Eyole Geoffrey says:

    What type of diseases are type A blood groups are at risks of? Mangoes,papaya and vitamin A seems not to be recomended though they can fight/ prevent cancer. Can I take moringa and aloe vera?

    • Dorine Lam RDN says:

      You can always write to me. If you want to call me, click “Call me” on http://www.drlam.com, and my office can schedule a free consultation for you.

      If you eat certain foods and it cause you stomach discomfort and gaining weight, the mood may create some internal inflammation. It is best to rotate or avoid the said foods.

      The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Sometimes after a long period of not eating the food that you can’t tolerate, your body becomes stronger, and less inflamed, so if you eat the troubled food, you may not be affected as much. You need to still watch and not over do, and eat the said food only once a week.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Karl B says:

    I’m type O-. As a bodybuilder I often use a ketogenic diet to cut body fat so I use a lot of coconut oil, or MCT oil, or caprylic acid supplement, because their easily converted to ketones. Now I notice on the type-B chart they cannot have olives but they can have olive oil… is it the same with coconut and coconut oil, or should I avoid it? Should I also avoid the MCT oils and caprylic acid?

    • Dorine Lam RDN says:

      Coconut oil is to be avoided for all the blood type, but I am not sure of the coconut itself.

      The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Lindsey says:

    You guys want to know something crazy? So, story time: When I was a baby I had colic, this means I had trapped air in my colon due to a dairy allergy. Clue one. Second clue was I developed cradle cap and had it all the way until recently. I’m 28. I have been living off bread, dairy and all the wrong things my entire life and only recently found this all out. I started eating super clean when I was 23 and it got a little better but my right arm was still damaged due to whatever I was suffering from. I have the most horrible stiffness and pain in my elbow and it ended up deforming my joint. Well, recently now my left arm started deforming and not going all the way straight then I woke up one day with the most horrible rib cage pain. Doctor told me it was inflamed, took my blood and told me my sed rate and crp was elevated. Okay thank you for the information, screw your pills and tests I got it from here. After days and days of non-stop reading I realized its my diet. I have been eating foods that aggravate me since I was a baby and it got out of hand causing me candida as a teen and young adult to rheumatoid arthritis at 28. So now begins the long road to damage control and recovery.

  • karim says:

    I read that strawberries are sometimes allowed for blood type O. Can i take iso whey protein as a workout supplement ?

    • Dorine Lam RDN says:

      Avoid strawberries and whey protein for blood type O.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

      • paula hooper says:

        What type of protein supplement do you recommend

        • Lindsey says:

          I use a plant based protein from Costco. It’s organic and I have not had any issues with it. So pissed about not being able to eat avocados and ketchup. Ugh

          • RL says:

            Avocados is the only thing on this list that has me in tears ?? But I’ve been following the blood type diet for 1 month now and all of the crazy symptoms I’ve been experiencing are almost completely gone!!!

      • Alex says:

        DORING LAM, which protein can a bodybuilder take besides WHEY?
        Whey has always been labled as the best in our industry.

        ALSO, what side can I have with my meals? I see the protein and veggies, but no other side?

        AND for breakfast, just a piece of Ezekial bread and a plum?

  • Robert says:

    Is your adrenal fatigue cookbook, broken up into meals for specific blood types? I am O+

    • Dr.Lam says:

      The blood type diet and Adrenal fatigue diet are different from each other , though there are cross overs.

      Dr Lam

  • Abbigail Brown says:

    Hi
    Can I eat KingKlip fish I am blood type A possitive ?
    Many thanks Abbie

    • Dorine Lam RDN says:

      Sorry, I don’t know about king Klip fish.

      Dorine Lam, RDN, MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Joseph says:

    Q. I’ve been taking 2-4 ounces daily of Aloe Vera mixed with cats claw sheep sorrel burdock root slippery elm bark rhubarb root Chamomile Hawthorne Berry Pau d’arco astragalus – good or bad for us with Blood Type O ?
    From male 87 years old – experiencing adrenal problems – result of death of wife

  • Jennifer says:

    I am researching the Blood Type Diet. I have type O. I also do not have a thyroid gland and have had a total hysterectomy. Can you recommend whether or not MCT oil is appropriate for me? In the book it states no coconut or coconut oil. Thank you!

    • Dorine Lam RDN says:

      You have some very good valid questions. Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The diet is founded by Dr Peter D’adamo. There are some principles in the blood type diet that are not accepted in conventional medicine and their recommendations. Ie coconut and soy are some of these discrepancies.

      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Anthony says:

    I am 36 yeas of age and I am seeing grey hair all over my head, could it be as a result of me not eating right? I am O+. Please help me out.

  • Arwin says:

    Hello Michael Lam, You have put together a very informative blood type chart. But i would like to any if there is any scientific evidence for the same.

    • Dorine Lam RDN says:

      Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The diet is founded by Dr Peter D’adamo. You will find more information in his book “Eat Right for Your Blood Type.”

      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Loula says:

    I was reading over this chart thinking I’ve been doing it wrong all along and going down the list like okay as much as I love yogurt, eggs, and grains I can remove this, and remove that. Then my feelings were hurt the more i read like Avocado, but then I was devastated as I continued down the list and it said things like everything I can’t have under the spices and condiment category. Can you explain why I can’t have avocado or the condiments? It doesn’t list the reasoning. Also if certain spices does not irritate my stomach (like cinnamon, vinegar, vanilla, and black pepper) is it okay to have? I don’t understand that part and am questioning if i need to completely cut out or if I can just cut back. HELP!!!,

    • Dorine Lam RDN says:

      You have some very good valid questions. Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The diet is founded by Dr Peter D’adamo. There are some principles in the blood type diet that are not accepted in conventional medicine and their recommendations. Ie coconut and soy are some of these discrepancies.

      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • April says:

    I see that the Brassica family is not good for Os. When I look up that family it includes brocolli & kale. Those are supposed to be good for Os. Please advise on the entire Brassica family, including kohlrabi.

    • Dorine Lam RDN says:

      For blood type O, avoid brussel sprouts, cabbage of any kind and cauliflower.
      Bok choy, kale, broccoli, kohlrabi are ok.

      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • saa says:

    I was diagnosed with Osteoarthritis and my blood group is O+. Am confuse in eating meat so that the symptom will not increase. Please advise me on my meal type.

    • Dorine Lam RDN says:

      In general, one with osteoarthritis should eat less meat, which is contrary to Blood Type O diet. The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Isaac says:

    Wow I liked explanation for type Os

    • Dorine Lam RDN says:

      The blood type diet is fitting for most of the people. Due to tremendous variation in individual constitution, there is no guaranteed success with it. If you would like to follow the blood type diet, I would recommend that you follow it vigorously for 3 months, even though you don’t see much harm or benefit in certain food. After 3 months, if you see no improvements in your health, then you can deviate and use the blood type diet as a general guideline and not overeat the foods that should be avoided for your Blood Type, but take them with care and in small amounts.

      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Genesis says:

    Cayenne pepper does not bother me (AB +) however my wife is (0) and she cannot eat it. Why is that?

    • Dorine Lam RDN says:

      Cayenne pepper is neutral for AB+ and beneficial for Blood Type O. If your wife can’t not tolerate it, it may have to do with her digestives health.

      Digestion issues, such as diarrhea, constipation, gastritis, acid reflux, IBS are common in Adrenal Fatigue. This can be due to many reasons, including assimilation as well as internal dysbiosis issues.

      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • rushi says:

    which protien minerals and vitamins are essential for good hairs for O positive group….?

    • Dorine Lam RDN says:

      There are many aspects to good hairs, such as thyroid health, female hormone balance, type of hair care, etc. The supplement in general for hair growth is biotin, nothing specific for blood type O.
      Dorine Lam, RDN , MS, MPH
      Registered Dietitian and Senior Holistic Nutritionist

  • Joyce Handy says:

    I have been researching blood type eating for a while.Kind of heard when there are 2 types is the household A and O
    However my question is if you process corn for Masa does this change the Lectin for blood type acceptance. The process is called Nixtamalization. Basically boilng corn in water with added Lime.
    Also will fermenting foods change this. also can coconut oil be used by O and A? also Chia seed?

    • Dorine Lam RDN says:

      In general, traditional food preparation such as soaking then cooking, sprouting, and fermenting, will decrease lectins and free up the good nutrients.

      Blood Type Diet is based on how the protein in the food called lectin affects blood agglutination. The diet is founded by Dr Peter D’adamo. There are some principles in the blood type diet that are not accepted in conventional medicine and their recommendations. Ie coconut and soy are some of these discrepancies.

  • Breanne says:

    I’m 25 and have broken out over the last several months with severeacne and itchy skin. Is it possible that this is due to a food sensitivity? I’ve been told the worst one for O is dairy.

  • Sandra says:

    Could you please expound why avocados and coconut products should be avoided by type O’s? Is it due to weight issues, joint issues, etc? Thanks much!

  • Cookie says:

    Any suggestions of what proteins to eat for type O vegetarians, I eat eggs and milk/yogurt/cheese but not good for me.

  • Stephanie says:

    I’m sad shouldn’t have coffee and tea

  • PABLO says:

    If essene and ezekeil are not gluten free, why are they ok to consume if your blood type O?

    • Dr.Lam says:

      For the blood type diet, the key is the lectin and how they affect the agglutination of your blood. It is not the gluten but the protein lectin that is important. With sprouted bread the protein structure of the grain is actually changed and may cause less agglutination in your body.

      Dr Lam

      • Evie says:

        What is your recommendation for using gluten free flour for thickening sauces only? What is the lectin like for this?

        • Dorine Lam RDN says:

          For Blood Type O, avoid even gluten free flour. You may want to use rice flour for a sauce thickener.

          Dorine Lam, RDN, MS, MPH
          Registered Dietitian and Senior Holistic Nutritionist

      • Lydia says:

        I actually react to gluten with rashes and hives…Is Ezekiel safe for me?

  • Sylvia says:

    Is this apply to O- as well?

    • Dr.Lam says:

      yes. There is no differentiation between + or –

      Dr Lam

      • Nikita says:

        Thank you for this listing. I’m reading it and am in complete shock. I’ve been dieting for years and never have a lot of long term success. Looks like I’ve been eating all of the wrong “health” foods for my blood type. I eat lots of greek yogurt and boiled eggs. I’ll be cutting that out.