Diet Tips for People with O Positive Blood

What Is O Positive Blood Type?

A person's blood type is based on the antigens found in the blood. These antigens, A and B are found on the surface of the blood cells and are uses as markers in the body. Type O blood does not have A or B antigens on the red blood cells, but contains both types in the plasma.

Blood types also contain a positive or negative mark depending on the presence of the Rhesus or Rh antigen. Those who have Rh markers in the blood have a positive blood type while those who lack Rh will have a negative blood type. Therefore those with an O positive blood type have no AB antigens in the blood, but do have an Rh antigen. This is the most common blood type available, and is commonly sought out for donations. Those with an O blood type can donate blood to those with A, B or O blood types without the worry that their blood will be rejected.

O Positive Blood Type Diet

People with different blood types will need to consume or avoid different types of food in order to maintain their overall health. Different blood types stem from different bloodlines in human history, so you will be more likely to flourish if you consume a diet that is rich in the foods that would have been common in human diets during this time. Type O blood is the oldest bloodline, so much of the O positive blood type diet is based on providing nutrients that ancient people would have consumed. Those with an O positive bloodline will also need to get plenty of vigorous exercise as part of their diet routine to ensure that calories are burned effectively.

Generally, those with O positive blood are recommended to consume a high protein, low carbohydrate diet.

The table below will show diet suggestions for people with this blood type directly. 

Types of Foods

Recommended Foods

Foods to Avoid

Lean Meats

Fish, poultry, venison

Excessively fatty meats such as beef


Olive and flaxseed oil

Corn, peanut and safflower oil

Grains and Dairy

Small amounts of rice, millet, buckwheat or rye

Dairy, corn and gluten-based products

Eggs (those of African ancestry)


Berries, plums, pears, bananas, carrots, cucumbers and celery

Corn, potatoes, Brussels sprouts, cabbage, cauliflower, eggplant, shiitake mushrooms, soybeans, avocados, coconut, kidney beans, Brazil nuts, lentils, cashews, oranges


Wine, Seltzer water and green tea

Caffeinated products such as coffee or black tea

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