Blood type personality is a Japanese concept called ketsueki-gata that posits that blood type shapes one’s temperament. Ketsueki-gata is considered a pseudoscience, a body of thought that appears to ...

There are many theories about what determines someone’s personality. The majority of personality theories related to outside forces—such as zodiac signs and blood type—have largely been debunked as ...

Beyond medical implications, some cultures and scientific studies suggest that blood type influences aspects of personality, diet, and overall health. Beyond medical implications, some cultures and ...

Some people believe personality is fixed, but more recent research suggests that personality may develop over time and that people’s personality traits can change. Personality types group people into ...

Personality types A, B, C, and D group people according to key personality traits. These types may affect many areas of life, including an individual’s health. Essentially, the personality types A, B, ...