Blood type personality (A Complete Guide)

In this article, we will discuss the Blood type personality. We will do that by giving an overview of the blood type theory, its development, and popularity. We will then discuss the four blood type personalities along with their characteristics based on the four blood groups. In the end, we will discuss the compatibility between blood group personalities. 

The Blood type personality 

Blood type personality is based on blood group theory given by a Japanese professor ‘Tokeji Furukawa’. According to him, the differences among people’s characteristics are genetic and based on the blood group they possess. However, his ideas are not backed by scientific evidence. It is similar to the horoscope trend which is popular among people. In the same way, in the Japanese culture, people inquire about blood groups of people to assess personality and compatibility between people. Each blood group has a different personality. So, there are four types i.e. blood group A personality, blood group B personality, blood group AB personality, and blood group O personality. Their details are discussed as follows.

An Overview of Blood Type Personality

In different countries, people have different ways of understanding the personality of others. Some cultures feel comfortable relying on astrological information to understand personality. Whereas, other cultures rely on different methods. Blood type or blood group is one of these methods. The Japanese and South Korean culture likes to rely on the blood group of someone in order to understand their personality and characteristics.

In companies, among friends, and even among romantic partners, this practice is quite popular in Japan. They check compatibility by inquiring about the blood group of someone. Despite the fact, that scientifically it is not backed up and warnings have been given to the general public to not rely on the authenticity of blood group personality, its usage continues to this day. Employers select employees based on their blood group. Similarly, schools split up children based on their blood group and so on. However, it must be mentioned that this discrimination is not too severe. It is similar to the horoscope addiction some people have with no drastic implications. In the same way, the general public varies in terms of their beliefs about blood groups determining the personality of a person. 

Blood Type Theory Development

The term commonly used in Japan is ‘Ketsueki-gata’ when evaluating a person and their traits based on the blood group they possess. A Japanese Professor in the 1930s published a paper stating that a blood group of a person gives an insight into the personality they possess. His name was Tokeji Furukawa. He used chi-square to test his findings. However, his motivation behind the study was to figure out why racism was done by Taiwanese soldiers. He tried to support the argument that their cruel behavior was genetic. He concluded that Taiwanese people should marry Japanese people to reduce blood type O and accordingly decrease toxic personality traits. 

Masahiko Nomi revived this theory in the 1970s. He had no medical background, yet he continued to produce statistically significant findings based on the blood group theory. He was criticized by Japanese psychologists based on no prior scientific or medical background. After his death, his work was re-evaluated and it was concluded that his study was not controlled properly and had unclear methodology. Yet, his son built upon his father’s work and continued with his research. 

The blood type personality is mostly dismissed in the scientific community. It is considered to be a pseudoscience and superstition since the evidence does not back up the claim that blood group predicts a person’s personality. 

Based on blood group theory, incidents of discrimination and racism have been reported. Blood type harassment or ‘bura-hara’ also exists. It is when children are discriminated against based on the blood group they possess. Similarly, job opportunities and relationships can also get strained due to this. 

Personalities based on Blood Groups

There are four types of blood groups i.e. A, B, AB, and O. Each blood group is different from the other based on their antigens. Antigens refer to a molecule that is present on the surface of the red blood cells. These decide how well our immune system works. According to Japanese people, these antigens are a medical basis of why our personality differs from one another. 

Personality based on Blood Group A

People with blood group A can be described as someone who likes to cooperate with others. Blood Type A personalities are also emotional and sensitive people who are quite passionate in their relationships. They are committed and loyal to their friends. Their priority is to maintain peace and harmony both internally and externally. This points to the idea that these people do not like to get into conflicts. 

At times, they can be quite sensitive and get hurt easily. They are not open to going against the rules. Rather, their tendency is to do things by the book, follow rules, and uphold social standards. 

They keep their pace slow while making decisions and carefully weigh their options before committing to something. Their focus is to be organized and systematic. When they start a task, they make sure to do it thoroughly and avoid multitasking so that their attention is not divided. They like order and neatness in their life. In a way, they share characteristics with OCD personality. They also get stressed easily due to high levels of stress hormones in their body. 

Personality based on Blood Group B

People with type B blood group can be described as having quick thinking. Accordingly, they are quite creative and make decisions in an efficient manner. They dislike being ordered around by authority. So, this indicates that they like to follow their own rules. They invest their energy and put effort into making their work stand out. They put in a part of themself in their work. Due to such emotional and mental investment, they avoid multitasking to maintain the quality of their work.

These people are considerate and thoughtful toward others. They are also empathetic and attentive to the needs of others. Due to this, they make reliable friends and partners. However, they can also be self-centered and uncooperative at times. This can strain their relationship with others. Due to this, people avoid them and Type B personalities tend to be loners.

Personality based on Blood Group AB

When a person has both blood group A and B, they are called the AB blood group. Accordingly, their personality is also an overlap of both blood type A and type B personality. They are quite rare personalities in the world.

They can be quite complicated since they are shy as well as outgoing. They do not open up to others quite easily. So, we can say they are reserved and private people. They are friendly individuals who use their social skills to make friends. They make sure others are at ease in their presence and enjoy their time. Furthermore, they are empathetic and considerate of the needs of others. They are not good at handling stress.

Personality based on Blood Group O

People with blood group O can be described as outgoing personalities who are not afraid of taking risks. They have high standards and high expectations from themself. We can say that they are achievement-oriented and make good leaders. They do not focus on minute details. Furthermore, they can be described as generous and loving. They are also flexible and adapt easily to different situations. They are confident and easygoing people who like to have peace in their life. They prefer to be the boss rather than being ordered around. With their friends, they are loyal and devoted. 

Compatibility between blood type personalities

Just like different blood groups are compatible with specific partners, the same is the case in terms of their personality. Type O blood group personality is compatible with AB  blood group personality and O  blood group personality. Typ A  blood group personality is compatible with type A  blood group personality and type AB blood group personality. Type B blood group personality is compatible with B  blood group personality and AB  blood group personality. Whereas, type AB  blood group personality is compatible with all blood group personalities. 

If you’ve enjoyed the ”Blood type personality” mentioned above, I would recommend you to take a look at ”Personality types that get along” too.

FAQs: Blood type personality

Can your blood determine your personality?

No. Scientific evidence does not support the claim that blood groups can determine the personality of people. However, just like the popularity of horoscope culture, the blood group personality is also popular among countries like Japan and South Korea. There, they inquire about the blood group of a person to understand their personality.

What is the personality of blood type a?

People with blood group A, have a personality that is corporative and sensitive to the emotions of others. They are loyal to their friends and patient in their manner. They dislike conflicts and strive for peace and harmony. They can be quite sensitive as well. 

What are the five rarest blood types?

Rarest blood types are stated in their respective order including AB negative, B negative, AB positive, A negative, O negative, B positive, A positive, and O positive.

Which blood type lives the longest?

According to Shimizu and colleagues up, blood type B has been linked with longevity. yet, different reports suggest Blood group A and Blood group O as associated with longevity. So, we can say that the results are not too conclusive. 

Can your blood type change?

No. Usually, the blood type of a person remains the same throughout their life. In some cases, the blood type can change but it is usually dependant on some medical issues or some operation. Not all blood type changes are permanent or remain the same throughout a person’s life. 

Conclusion

In this article, we discussed the blood type personality. We found that Blood type personality is based on blood group theory given by a Japanese professor ‘Tokeji Furukawa’. According to him, the differences among people’s characteristics are genetic and based on the blood group they possess. However, his theories are not backed by scientific evidence. It is similar to the horoscope trend which is popular among people. In the same way, in the Japanese culture, people inquire about blood groups of people to assess personality and compatibility between people. Each blood group has a different personality. So, there are four types i.e. blood group A personality, blood group B personality, blood group AB personality, and blood group O personality. 

 I hope you found this article interesting. If you have any queries or comments, please state them in the comment section 😊

Citations

https://timesofindia.indiatimes.com/life-style/health-fitness/health-news/whats-your-blood-group-the-answer-might-reveal-some-interesting-things-about-you/photostory/69024174.cms?picid=69024370

https://en.wikipedia.org/wiki/Blood_type_personality_theory

https://www.betterhelp.com/advice/personality/blood-type-personality-what-does-your-blood-say-about-you/

Divya is currently a Clinical Psychology Trainee in a Master of Philosophy program and holds a Master’s in clinical psychology. She has a special interest in Personality studies and disorders, having researched the subject before, and Neuropsychology; with an additional interest being Mood disorders. She likes to write about Psychiatric issues, having worked in multiple specialty setups during her time as a clinical psychology student, and in her free time she likes to cook and read.