What You Need to Know About Your Blood Type: Traits, Compatibility, and the Right Diet


Character, susceptibility to diseases, and even the likelihood of premature death – all this can be revealed by your blood.

The first blood types were identified in 1901 by the Austrian doctor Karl Landsteiner. There are only four of them. To know more about yourself and your body, you should have as much information as possible about your blood group.

So, why can a person only receive a certain blood type during a transfusion, and how can you find out if you are at risk of any disease? Nash.live’s editorial team investigated.

Blood Types

As mentioned above, there are four blood groups, all determined by the ABO system.

  • The first group (O) – about 44% of the world’s population has this blood type.
  • The second group (A) – about 42%.
  • The third group (B) – 10% of the world’s population.
  • The fourth group (AB) – 4% of the population.

It is worth noting that the blood type also includes the Rh factor. It determines whether a person has an antigen on the surface of their red blood cells. If a person has a positive Rh factor (Rh+), it means the antigen is present in their blood, while a negative Rh factor (Rh-) indicates the absence of the antigen.


Blood compatibility is a crucial factor because each blood type has its own characteristics, which affects transfusion procedures. There are two types of compatibility: by blood group and by plasma.

Compatibility by Blood Group

  • Blood Group 1: This blood type is considered universal, meaning it can be donated to any other blood group, but it can only receive blood from another Group 1 individual.
  • Blood Group 2: It can be donated to Groups 2 and 4 but can only receive blood from Groups 1 and 2.
  • Blood Group 3: It can be donated to Groups 3 and 4, and can only receive blood from Groups 1 and 3.
  • Blood Group 4: This blood type can receive blood from all other blood groups but can only be donated to another Group 4 individual.

Compatibility by Plasma

  • Blood Group 1: Can donate plasma to anyone but can only receive plasma from another Group 1 individual.
  • Blood Group 2: Can receive plasma from Groups 2 and 4 and can be a plasma donor for Groups 1 and 2.
  • Blood Group 3: Can receive plasma from Groups 3 and 4 and can be a plasma donor for Groups 1 and 3.
  • Blood Group 4: Universal plasma donor, but can only receive plasma from another Group 4 individual.

Rh Factor

As a reminder, there are two Rh factors: positive (with the antigen) and negative (without the antigen).

This factor is essential because it can impact your future life.

If an expectant mother has a negative Rh factor and the father has a positive Rh factor, a Rh incompatibility may occur during conception. This can lead to serious consequences: 1) the fetus may develop hemolytic disease (destruction of red blood cells), causing jaundice, anemia, and even miscarriage; 2) fetal erythroblastosis (production of immature red blood cells), resulting in the newborn experiencing hemolytic anemia or hypoxia in the first hours of life.

It is essential to seek medical attention and begin treatment in such cases to safeguard the child. At around 28 weeks of pregnancy, the doctor administers the necessary blood plasma injection to prevent the formation of antibodies. The procedure is repeated 72 hours after childbirth.

How Blood Type Relates to Character

A person’s blood group can provide insights into their character. The four blood groups show how different people can be.

According to scientists, evolution divided people into groups.

The oldest group is the first, followed by the second, with the third and fourth groups being defined later.

  • Blood Group 1: People with this blood type have a strong and determined character; they always strive to be leaders. They are sensitive to criticism, love themselves, but are also empathetic and ready to help at any moment. Men with this blood type are very affectionate and are drawn to unavailable women. Women with blood type 1 are very jealous but find it difficult to trust their partners.
  • Blood Group 2: Individuals with this blood type are very friendly and sociable, but they can also be resentful. They deeply absorb every word and can hold grudges for years. People with blood type 2 find it easy to relocate and adapt as they don’t get too attached to one place. Men with this blood type are shy and romantic and have difficulty detaching from maternal care, often looking for maternal qualities in their partners. Women with blood type 2 are considered the best wives; they are practical and devoted but can be reserved.
  • Blood Group 3: People with this blood type find meaning in adventures. They are active and outgoing, valuing freedom and independence. Finding a job that suits them can be challenging. Men with blood type 3 are charismatic and can win the hearts of any woman. Women with blood type 3 risk being without a partner due to their attractiveness and openness, as men are often afraid to marry them. Such women can attract any man but may transform from charming flirts into loving wives after marriage.
  • Blood Group 4: Individuals with this blood type are very rare. They are calm and rational, often becoming artists, poets, or designers due to their creativity and multifaceted nature. Men with blood type 4 are passionate and attractive but hide sincere emotions and fear showing vulnerability. Such men are very tender and sensitive. Women with blood type 4 are demanding, and not every man can meet their expectations and desires.

Please note that while this information may be intriguing, it’s essential to treat it as fun and not as scientifically proven personality profiling. Blood type and character correlation is not scientifically validated, and a person’s character is influenced by a complex interplay of genetics, environment, and personal experiences.

Nutrition and blood types

By learning more about your blood group, you can avoid many problems, such as unnecessary weight gain, as you should choose a diet that suits your specific blood group.

Dietitians have created a list of foods that have a positive and negative impact on each blood group.

Blood Group 1

Beneficial: fish (in any form), green tea, seafood, vegetables, and fruits (but not sour ones).

Harmful: all dishes made from corn and wheat, cabbage (broccoli is an exception), ketchup and similar sauces, alcoholic beverages, strong tea, coffee.

Blood Group 2

Beneficial: all dairy and fermented products, red wine, juices (especially citrus, cherry, and carrot juices), legumes, coffee drinks.

Harmful: meat (in large quantities daily), wheat products, orange juice, tropical fruits, black tea.

Blood Group 3

Beneficial: meat (except chicken and duck), fermented milk products, eggs, cereals (buckwheat is an exception), vegetables (except tomatoes), fruits.

Harmful: seafood, chicken, and duck meat, tomato juice, olives, corn, peanuts, and carbonated drinks.

Blood Group 4

Beneficial: meat (except red meat), fish, dairy products, legumes, olive oil, walnuts, vegetables (except bell peppers), fruits (except sour ones), green and herbal teas.

Harmful: red meat, bacon, seeds, buckwheat, wheat products, linden and aloe tea.