Don't judge a book by its...blood type.

WSJ's Real Time Japan reports that a recent study conducted by a Kyoto University professor found that there is, indeed, no relationship between blood type and personality:

For his study, Kyoto Bunkyo University’s Kengo Nawata conducted a questionnaire of over 10,000 people in both Japan and the United States on a variety of subjects including personal preferences and thoughts on future plans, religion, gambling and relationships.

Of the 68 questions, 65 of them showed no specific pattern depending on the person’s blood type, Mr. Nawata wrote, pouring cold water on the idea of blood as a determinant of character. Even with these three questions the study showed that blood types “explained less than 0.3% of the total variance in personality.”

“There is no correlation between blood type and a person’s character,” Mr. Nawata wrote in the study.

And here I always thought the whole thing was like astrology - something that people read about for fun but few really believe to be accurate.

Nope. I only read O-Negative books.