The BBC reports on the Japanese obsession with ketsueki-gata, a form of racialist junk science resembling astrology, which claims to be able to predict a person’s personality, temperament, and behavioral propensities from his blood type.
[In Japan,] a person’s blood type is popularly believed to determine temperament and personality. “What’s your blood type?” is often a key question in everything from matchmaking to job applications.
According to popular belief in Japan, type As are sensitive perfectionists and good team players, but over-anxious. Type Os are curious and generous but stubborn. ABs are arty but mysterious and unpredictable, and type Bs are cheerful but eccentric, individualistic and selfish.
About 40% of the Japanese population is type A and 30% are type O, whilst only 20% are type B, with AB accounting for the remaining 10%.
Four books describing the different blood groups characteristics became a huge publishing sensation, selling more than five million copies.
Morning television shows, newspapers and magazines often publish blood type horoscopes and discuss relationship compatibility. Many dating agencies cater to blood types, and popular anime (animations), manga (comics) and video games often mention a character’s blood type.
A whole industry of customised products has also sprung up, with soft drinks, chewing gum, bath salts and even condoms catering for different blood groups on sale.
Types defined at length.
Condoms (accompanied by special romantic advice) and perfume are marketed by blood type.