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5 Foods to Eat for Blood Type O


Did you know that you may better support your overall health by eating right for your blood type?

Dr. Peter D’Adamo is the doctor behind the Blood Type Diet Program, a relatively new (and some would say fad) diet that encourages you to eat foods that are most compatible with your body based on your blood type.

If you’re Type O, read on for more information about what you should be eating and what you may want to exclude from your diet.

What Does Your Blood Type Mean?

In 1930, Professor Tokeji Furukawa published a paper that claims that each individual blood type has an effect on personality. While this theory is a large part of Japanese culture, there has been no proof of the two being related. (If you’re curious about it, you can read more here.)

There has been plenty of research and evidence for how your blood type may affect your personal health, though. Here’s a basic breakdown of each blood type:


For more detailed information about how your blood type may affect your personal health, visit this site.

What to Know About the Type O Profile

According to Dr. D’Adamo, every blood type has its own strengths and weaknesses. The list below gives a good look at those for Type O (Source):

  • People with Type O blood have a tendency toward higher levels of stomach acid
  • People with Type O have a well-developed ability to digest proteins and fats
  • In people with Type O, carbs are more easily converted into triglycerides and fats
  • Grains may also increase a Type O immune system, which may lead to unwanted health issues

What is the Type O Response?

Historically, people with Type O blood had been thought to be aggressive predators. Today, that is much different. Type Os throughout society today have been characterized with details much different:

  • Energetic extroverts and leaders
  • Keen ability to stay focused
  • Prone to anger, hyperactivity and impulsiveness when under large amounts of stress
  • More vulnerable to destructive behaviors when overly tired, sad or bored

When under stress, there’s a good chance that poor dietary choices will be made, and while this likely goes for all blood types, in Type O people, the effects may be a little different from the other types. For Type O, these include weight gain, insulin resistance, thyroid issues and other metabolic issues. Stomach ulcers may also be more prevalent in people with Type O blood.

Dr. D’Adamo recommends managing this response and your stress levels by sticking to the Type O Diet, as well as to a regular exercise program. Let’s take a look at both.
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Why Exercise is Important

There are two crucial components to the Type O diet: exercise and, of course, healthy eating. According to Dr. D’Adamo, a regular exercise routine is extremely beneficial for people with Type O blood (Source):

Type Os benefit tremendously from brisk regular exercise that taxes the cardiovascular and muscular skeletal system. But the benefit derived surpasses the goal of physical fitness. Type O also derives the benefit of a well timed chemical release system. The Type O who exercises regularly also has a better emotional response. You are more emotionally balanced as a result of well regulated, efficient chemical transport system. More than any other blood type, Os rely on physical exercise to maintain physical health and emotional balance.

People with Type O blood will get the most benefit from a high-intensity physical fitness routine. Including aerobics, running and even martial arts may be a great idea.

Instituting a daily trip to the gym or maintaining a regular running schedule is a great idea, not only because it fits with your blood type, but also because it’s just generally good for your overall health, too.

But what about daily dietary choices? Let’s take a look at five foods that are great for people with Type O blood.

5 Foods for Blood Type O


The Type O Diet is rich in protein. Beans are a great option for getting the protein your body needs for optimal health. Good options include azuki, black-eyed and aduke beans.

According to Dr. D’Adamo, green and red lentils, copper beans and kidney beans should all be avoided, if possible.

Other beans like green peas (and pea pods), red soybeans and string beans are all options that are neither harmful or beneficial for people with Type O blood. Eat away if you’d like!

Lean Meats & Fish

People with Type O blood can easily digest meat, so it’s no surprise that this diet should be rich in fish and other lean meats. Items like venison, beef, mutton, lamb, herring, and cod are all ideal choices.

It’s best to avoid meats like bacon (and other pork cuts), salmon and catfish, as those are not recommended for Blood Type O. It is also advised to stay away from vegetarian diets as well.


Just like with beans, there are certain vegetables you should eat and certain ones you should avoid if you have Type O blood. Beneficial choices include broccoli, spinach, collard greens, kale, onions, artichokes and pumpkins.

Things to avoid include brussels sprouts, cabbage, mustard greens and cauliflower, as they may have negative effects on your thyroid function. Shiitake mushrooms and alfalfa sprouts may also affect your digestive system.


When choosing fruits, it’s important to consider the acid content. People with Type O blood have naturally high stomach acid, so avoiding fruits like strawberries, oranges, blackberries, tangerines and rhubarb because of their high natural acid content. It’s also advised to avoid coconut, as well as melons.

Beneficial fruit options include plums, prunes and figs.

Nuts & Seeds

A variety of nuts and seeds are great for snacking and cooking, and pumpkin seeds and walnuts are thought to be the most beneficial for people with Type O blood. Other options are acceptable as well, but it’s advised to avoid Brazil nuts, cashews, peanuts, pistachios and poppy seeds.

Recipes for Blood Type O

While it’s possible to alter recipes to include ingredients that are most beneficial for your blood type, we’ve included some here to get you started.

Take a look at the video below for juicing and smoothie ideas, too!

If you’re interested in recipes for Blood Type A, you can find some here.

The Bottom Line

Dr. Peter D’Adamo offers a line of natural supplements that work with your blood type to keep you healthy. Natural Healthy Concepts carries a wide range of products from D’Adamo Personalized Nutrition, which you can find here.

Do you have any experience with the Blood Type Diet? We’d love to hear from you. Please leave us a comment below and let us know how it’s working for you.

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28 Responses to 5 Foods to Eat for Blood Type O

  1. Gayle March 1, 2016 at 11:23 am #

    This makes alot of sense to me. I’ve been following the O Blood type diet for about 6 years and can definitely see the benefits from it. For me limiting my grains and eliminating most dairy except for some cheese I do much better feeling great. I’ve added more nuts and vegetables and try to have some beef every day..even a small amount of beef.

    The thing I need to incorporate into my life style is a more vigorous exercise program. Thank you for the great message!

    • Jane Gallin December 28, 2016 at 6:43 pm #

      I have done a 0 blood type diet before and this is a plus. I will continue to follow it. I will add beef, lamb and venison. I mainly eat fish and chicken. Thank you for this information.

  2. ann ire August 22, 2017 at 4:10 pm #

    In was excited to see the chicken enchiladas recipie for type O’s but upon looking at it I see it requires tortillas which are all made out of grain or corn which are both very much a NO according to DrAdamo 🙁

    • Diane November 19, 2017 at 10:16 am #

      Spinach tortillas or vegetable ones are in some stores

  3. Christopher August 31, 2017 at 7:03 pm #

    Pls provide list of carbohydrate food types for blood type O

  4. tess November 9, 2017 at 5:38 am #

    thanks so much for the info, it helps me a lot

  5. Tatiana January 13, 2018 at 4:29 am #

    I have followed the diet before and felt good. I’m off it and I’m feeling terrible. Headaches, gaining weight, joint pains, no energy etc.
    I’m going out today and do my shopping including hemp protein.

  6. Kim Robinson January 22, 2018 at 12:41 pm #

    I would like a list of positive suppliments I should take with O+ blood type.

  7. Cherie February 24, 2018 at 4:10 am #

    Please help: what do you suggest with O positive blood group and chocolate intake? I love chocolate
    What is an alternative to crisps? I can’t eat popcorn so then what?

    • Leslie Benson February 27, 2018 at 12:14 pm #

      Hi Cherie,

      Great question! Eat Right 4 Your Type Pocket Book O, by Dr Peter J D’Adamo, is a portable guide for eating right for your blood type. You’ll find what you’re looking for in that book.

      Good luck with your natural health journey!

  8. Brooke Mcmiller March 29, 2018 at 12:00 pm #

    No salmon ?

    • Leslie Benson April 3, 2018 at 2:09 pm #

      Hi Brooke, The full list of foods recommended for Blood Type O can be found in this pocket-sized book. Good luck on your health journey!

  9. Cosmos April 8, 2018 at 7:14 am #

    I belong to blood group O positive and aftercarefully read your article I have come to realised that it is not advisable to eat cereals food. I am an African where most of out diet ate cereal foods so what should I do?

  10. Mitchell W Henderson April 8, 2018 at 9:28 am #

    I was think of trying the vegetarian diet, because i keep hearing how bad beef is for you. after reading this I realized that I don’t have to give up eating beef, besides it will be easier for me to give up some of the other recommended foods instead. This will make the O food diet more appealing Thanks!

    Hound Da’ Mu

  11. Maya June 14, 2018 at 4:39 pm #

    It works for me in the way I look and how my body looks like. However, being vegetarian for 6 months now gives me a clear mind and a lot of energy that I didn’t have any of when I was eating meat. I am 0- and meat doesn’t work well with my brain for some reason. perhaps this diet would or wouldn’t work for some based on their life’ experiences and DNA changes. Our DNA indeed does change every 7 years, regardless. Still, many great ideas and thank you

    • Jacinda June 22, 2018 at 9:16 pm #

      I was thinking of that I’ve been a vegan for 2.5 years

  12. Anne Shaffer June 30, 2018 at 2:59 am #

    I really appreciate with this full list of foods recommended for Blood Type O.After reading this I realized that I don’t have to give up eating beef, besides it will be easier for me to give up some of the other recommended foods instead. This will make the O food diet more appealing Thanks for the sharing such a informative article.

  13. James patience etop November 10, 2018 at 3:43 am #

    I really appreciate this. Will try to stick to eat.
    But my question is what kind of diet can l take to less my tummy. Am having difficult towards that. Tanks

  14. Gerald waniala January 18, 2019 at 2:04 pm #

    I am blood group o , I had not followed the diet for group o diet . however I have been facing some challenges like weakness in getting up in the morning . I am going to start on the diet to see whether there is a change or not

    Thank you.

  15. Beth January 20, 2019 at 12:07 pm #

    I made a lifestyle change with a his diet loosing 160#. I exercise regularly now but as
    I was on the weight loss journey I did not exercise. This diet worked anyway! I have
    No stretch marks and have some loose skin but since I do exercise regularly has helped!
    Good Luck All!!!

  16. Fati Adams February 17, 2019 at 11:57 am #

    Pls i need full list of food and supplement recommended for blood O type

  17. Daisy Naidoo March 3, 2019 at 11:16 pm #

    I have …blood group o. I was vegetarian for many years and felt like I was literally being poisoned on this diet . I had no energy , my hair was falling out and was experiencing severe bloating.
    My husband recommended the Blood Group diet and the first day I ate beef , I felt as if a lightbulb had gone off in my head . I literally felt amazing . I’m perfect weight at 59 kg being 1.69 cm and undergoing menopause now with grace. Thank you Dr D’ Adamo

  18. Samira March 8, 2019 at 10:30 pm #

    Please my problem is,some food’s are recomended for people with blood type 0, other times those same food’s are said not to be good. I get confused.

  19. Ignatius Buytendag June 11, 2019 at 7:23 am #

    Hi, I rely struggle to gain weight and would like to know what is the best diet for me to follow?

  20. Ann November 14, 2019 at 9:05 pm #

    I ate this way for 2 years, then because of pressure from the vegans in my family I tried to do plant based eating. After a year of very little red meat and too many grains I ended up in the hospital with blood sugar issues. No diabetes! So lucky. Back to red meat. My first meal was liver and onions. So good!! Like candy to a child. Needless to say I am eating a lot of meat–a 3 oz. hamburger patty with 3 eggs every morning. Add at least 2 more servings of protein as well as recommended fruits and vegies per day. Avoid all grains and other no-no foods. They really do add weight! I read that the O type is the most restrictive as far as food choices; and must be adhered to more strictly than other types for optimum health and feeling good! It is so worth it!

  21. Endocrinologist Vanessa Pich December 28, 2019 at 8:49 am #

    “I have no problems with the blood type A recommendations, which is a plant-based diet,” says Grotto. “Overall, the recommendations are good for most of the blood types.”

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