Many people wonder whether personality is influenced by blood type or not. Well, the blood group you belong to can give a lot of insight about you. Different lectins present in supplements and foods stimulate your cells based on your blood group.

This is perhaps the reason why the nutrients that are harmful for people of one blood group are beneficial to another. The author of the bestsellers “Eat Right for Your Type” and "Live Right for Your Type", Dr. Peter D'Adamo thinks an o positive blood type diet that can help people with type O blood to live a healthy life.

What Is Type O Positive Blood?

The antigens present in blood determine the blood type of a person. Antigens, A and B are present on the blood cell's surface and works as markers in the body. People with blood type o positive have an Rh antigen as well as A and B antigens present in the plasma. Type O is the most common blood type and is often sought out for blood donation as well because type O blood can be donated to people of any blood types without fear of rejection.

Type O is the basic and oldest types of blood. The characteristics that make the people of this blood group unique are an overactive immune system, inability to digest glue-containing products, intolerance for environmental and dietary adaptation and a hard digestive system.

O Positive Blood Type Diet



For people in the O positive blood group, foods that restrict the production of the thyroid hormone are very harmful. The production of the thyroid hormone in people with O type blood is generally very low and they are always having trouble with their thyroid gland. This is why we are giving you an account of the beans:

  • Beans are highly beneficial for people with type O positive blood and should be included in the o positive blood type diets, which include black-eyed, azuki, aduke and ainto.

  • Green peas, pea pods, red soy, string and snap are examples of beans that do not have any harmful nor any beneficial effect on people with Type O blood.

  • The beans that are harmful for type O people and must be avoided at all costs are green and red Lentils, tamarind, kidney beans and copper Beans.


Lean Meat

A high protein diet that includes organic meats is good for people in the O blood group.

  • You can get the protein you need from venison, mutton, lamb, beef, veal and fish like cod, mackerel and herring. Seafood is best for the type O group as it contains a high amount of iodine in it which is helpful for regulating the thyroid glands.

  • However, bacon, pork and goose are the meats that must not be included in O positive blood type diet. Eating smoked salmon, pickled herring, octopus, caviar and catfish is also not recommended for those with type O blood.

  • Since people with O blood group can digest meat without any problem, eating a vegetarian diet is not a good option for this group.



  • The vegetables that are beneficial for people with type O blood are spinach, broccoli, kale, romaine lettuce and collard greens as they are rich in vitamin K. Vegetables like leeks, onions, garlic, artichokes, pumpkins and parsley can also be included with an o positive blood type diet.

  • Brussels sprouts, cabbage, mustard greens and cauliflower are some of the vegetable that the type O group should not eat as they impair the thyroid function. Fermented olives, alfalfa sprouts and shiitake mushrooms must be avoided by type O's as they inflame the digestive tract. Eggplants, potatoes and corn should be avoided as well by this blood group.



  • Foods that balance the digestive tract's acidity like figs, prunes and plums are best for the type O blood group.

  • However, D'damo asserts that cantaloupe, melons and honeydew must be avoided by these people because they have mold in them. Besides, oranges, strawberries, rhubarb and blackberries are also not recommended.

  • Coconut is also not advisable for people with the O blood group as it can inflame their stomachs which could be already irritated.



  • People in the O blood group should include wine, green tea and Seltzer water in their diets. These beverages have anti-oxidants that can help in promoting digestion and maintaining your health.

  • Highly caffeinated drinks and black tea are not recommended for people that have O positive blood type.


Other Dietary Tips for O Positive Blood Type

  • People with O type blood should eat soy milk, butter, mozzarella, farmer' cheese, goat cheese and feta and limit their consumption of eggs and dairy.

  • Peanut, corn, safflower and cottonseed should not be used by the type O blood group but flaxseed and olive oils are excellent for this group of people.

  • Wheat products are a big no-no for people with O type blood but they can have barley, amaranth, kamut, rice, spelt and millet.

  • Cashews, peanuts and poppy seeds are not recommended for type O's but walnuts and pumpkin seeds are good for this group.


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  • ZodwaDec.22 15:29
    Thank u I was eating wrong food
  • ZodwaDec.22 15:27
    Grapefruit juice is okay for person with blood type o positive
  • mhiklDec.10 19:47
    Where does this lean meat, low fat idea for O bloods come from? Even dr D'Adamo suggests the same. Is it just a reaction to the anti-fat drive of media and accepted medicine? I am retired, 65 y/o, and fat makes up 60~80% of my calories. Protein is next and roughly 10% of my calories come from low carb vegetables, a few berries and maybe one piece of fruit a day. I eat only one meal a day, my evening meal around 5~6 pm. My fat comes from fatty meat, lamb, bovine, wild meat, occasional cured pork; and a good amount of Hemp seed oil as a morning, noon, supper and evening support. It is difficult to find actual pure quality Olive Oil, and I do not like the taste, so it isn't used. Check out Brian Peskin on fish oils. I gave them up two+ years ago, where before I ate a lot of Pink Salmon for the omega oils. Now no more. I have no health issues other than a bad hip from an accident age 30, where I was not able to get to an MD. A hip replacement is in order, but my use of Borax has strengthened my elderly bones so much (4+ years) a recent dentist was amazed over their extreme strength, 'for any age'. I am not much into exertion exercise, never have been. I like to walk, and take the occasional fast 100 metre run. Namaste and care, mhikl
  • chelseaDec.2 07:06
    My boyfriend is struggling with his weight. He had been underweight for a while now even though he is constantanly eating and in large portions, it's quite concerning. He's an O+. Any suggestions for a weight gaining diet
  • K. FeniliNov.27 18:36
    Lol Penelope I was saying the same to my self
  • ArfatNov.25 05:40
    Dear Afsana keep you regular exercise and lean diet. Try to continue multivitamin and calsium. Take CLA before 30 minute meal.. From:Ak
  • RichardNov.20 16:56
    Richard, I am 29 years ,and I want to be a little bit fat.what what should I do.l am O blood type.
  • Cliff RichardsonNov.10 18:33
    Woow nice staff,,,, I like it,,
  • brittNov.9 05:46
    I eat eggs everyday and wheat bread and I love love love kidney beans lol! This article was very helpful. I am on a weight loss journey and although I have wonderful exercise habits, I am very active, keep a clean diet(most of the time) and take my vitamins my body is not responding as fast as thought it would be, I will implement these things into my diet now. thank you so much :)
  • frederick osafoNov.8 10:01
    This is a pure research and it is perfectly in-line with what my Dietician advised me on. Thanks for this article
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