The Origin

A Japanese book with a black cover was published from Sankei Publication in August, 1973. The author of this book is Mr. Masahiko Nomi, the title is "Ketsueki-gata ningen-gaku" (血液型人間学 or Blood type humanics).

[Photo: New version]


It is his first book of the blood-type series. The book was sold over 300,000 copies in a short period and caused the first blood-type boom throughout Japan. After this book, Mr. Nomi wrote the second one: "Ketsueki-gata aijo-gaku" (Blood type affection study) and the third book "Ketsueki-gata katsuyo-gaku" (Blood type utilization study). Soon "blood type and personality" became a buzzword of Japan. 


 Mr. Nomi wrote these sentences in the introduction of his book "Ketsueki-gata katsuyo-gaku" (Blood type utilization study).

"Ketsueki-gata ningen-gaku" (Blood type humanics) is the first book of the blood-type series. There were many topics, including introduction to blood-type analysos. In "Ketsueki-gata aijo-gaku" (Blood type affection study), I tried to explain affection objectively, which is usually thought to be subjective, by using many statistic data. As I am a pervasive Type-B person.


In this "Ketsueki-gata katsuyo-gaku" (Blood type utilization study), compilation of knowledge of the two books, I will begin to approach the essence of the heart and action of the human being from personality structures.

Attitude to relation itself between ABO blood type and humanity have changed a little with these three books. In "Ketsueki-gata ningen-gaku" (Blood type humanics), I said that it is "the scientifically inevitable fact" and "easy to understand the degree (of relation)" by actual examples and numbers. In "Ketsueki-gata aijo-gaku" (Blood type affection study), the statistics values show strong demonstration nature (of the relation) and impossible to avert eyes to this fact now". This book, "Ketsueki-gata katsuyo-gaku" (Blood type utilization study), carries new objective statistics in part two of chapter two, assume that the relation is the testified scientific fact. Now, It is entirely meaningless effort to discuss whether there is relation ... with blood type. I will concentrates on analyzing and observing it concretely, through supporting how that is expressed really with the data.

 Excerpts from advertisements of " Nomi's blood-type series" by Sankei publication.

Ketsueki-gata ningen-gaku (Blood type humanics)

Personality analysis that makes you feel happy

Bestseller that pursues the fundamental relation between blood types and personality, and demonstrate scientifically, by tough observations, continuing coverage for elaborate questionnaire surveys in 30 years 

Published in August 1973

258 pages


Chapter 1  Blood types divide the human being

1. Understand differences of blood types at a glance

  1.1. Eisaku style and Kakuei style (both were Japanese prime ministers)

  1.2. Ways of Hibari (singer) and Mariko (writer)

  1.3. Blood types rule of personality

2. Blood types that divide talents

  2.1. Type O divides the singer and the master of ceremonies

  2.2. Type B divides shogi (Japanese chess) and go (Chinese Board Game)

  2.3. Type A doesn't exist in SF writers

3. Graphs that draw characteristics of blood types

  3.1. Questionnaires of 150,000 samples

  3.2. Type A avoids people, type B does not

  3.3. Type O receives arrangements for search

  3.4. Type AB does not buy souvenirs 

4 Blood type that makes racial traits 

  4.1. Native Americans are only type O

  4.2. Mongolians and Gypsies are more type B

  4.3. Japanese is a type A race

Chapter 2  Principle of blood types and personality

1. Basic knowledge of blood types

  1.1. Blood types is not types of blood

  1.2. Why blood types takes part with character and constitution?

  1.3. Heredity system of blood types -- there are 6 real blood types

2. Mechanism of human characters

  2.1. Tastes of vegetables and tastes of characters

  2.2. Characters and personalities are different

  2.3. All the people are both Dr. Jekyll and Mr. Hyde

3. Basic characters of each blood types

  3.1. Type O's nature in Mr. Shirakawa (cameraman)

  3.2. Type O's basic characters

  3.3. Type A's nature in Mr. Yokoi Shoichi (soldier)

  3.4. Type A's base characters

  3.5. Type B's nature in Ms. Mieko Takamine (actress)

  3.6. Type B's basic characters

  3.7. Type AB's nature in Mr. Osamu Dazai (writer)

  3.8. Type AB's basic characters 

4 Blood types that move the Wisdom/feelings/minds

  4.1. Wisdom -- curiosity and study styles

  4.2. Rationality -- thinking styles and creation 

  4.3. Feelings -- feelings and expressions

  4.4. Minds -- baviors and decisions

Chapter 3  Blood types that influence life and behaviors

1. Daily behaviors and blood type

  1.1. Eat!

  1.2. Ware!

  1.3. Sleep!

  1.4. Make!

  1.5. Laugh!

  1.6. Chat!

2. Blood types that produce love and humanism

  2.1. Basic attitude toward people

  2.2. Warmth and coldness toward people

  2.3. How do we think of affinities? 

  2.4. Case studies of character compatibility

   Type O Sayuri Yoshinaga and Type O Taro Okamoto / Type A Moeko Tawara and Type A Kotaro Tawara

   Type B Yukiji Asaoka and Type O Masahiko Tssgawa / Type O Yoshie Chikamatsu and Type AB Sumire Ichikawa

  2.5. Nature of affection and sex

Chapter 4  Blood type appeals!

1. Don't we consider blood types in traffic accidents?

2. Are blood types able to apply to crime prevention?

3. Don't we need to consider blood types to medical treatment?

4. Don't we need to consider blood types to physical education sports?

  4.1. Blood types that divide winners and losers of sumo ring

  4.2 Special ability and blood types of sports players

5. Lifespan differs by blood types?

  5.1. Which blood type is forever young? 

  5.2. Which blood type becomes a senile person?

Chapter 5  Blood types that make the most of human life

1. Blood types make most of individuals

  1.1. Strong and weak points with blood types

  1.2. Blood types that make smooth human relationship

2. To use blood types for aptitudes and suitable occupations

  2.1. Aptitudes

  2.2. Suitable occupations

3. How to live better your life?

  3.1. An advice to type O life

  3.2. An advice to type A life

  3.3. An advice to type B life

  3.4. An advice to type AB life

  3.5. Blood types and human societies

From my research notebooks -- in stead of afterword

Ketsueki-gata aijo-gaku (Blood type affection study)

Dramas of love and sex, testimonies of 20,000 people

Affection, that is the movement of heart, is closely related to personality, in other words, blood type. The first substantial affection report that proved scientifically on the basis of about 20,000 people data

Published in May 1974

278 pages

Ketsueki-gata katsuyo-gaku (Blood type utilization study)

The book that makes use of yourself and makes human relations better

How to use the knowledge about blood type and personality, for self control and improvement and improvement to human relations, by scientific data.

Published in May 1976

288 pages

Ketsueki-gata essense (Blood type essense)

The book that makes use of yourself and makes human relations better

Relationship between ABO blood type and personality is taken up to an item of an encyclopedia. Special compact book that summarized author's survey researchs  in many years. Blood-type lists of many fields; stars and experts.

Published in June 1977

240 pages

Ketsueki-gata essense (Blood type essense)

Aastonishing facts that mov politics!

A new map of political world by blood type. Pursues about the relation between blood type and politics on the basis of the data of about 2,000 members of the Diet and the whole governors/mayors in Japan. The latest book of popular series!

Published in June 1978

318 pages

Ketsueki-gata de wakaru aisho (Understanding affinity by blood types)

Published in 1971


Shin ketsueki-gata ningen-gaku (New blood type humanics)

Published in 1978


For further information, please visit Human Science ABO Center's website that inherits Mr. Nomi's Research.