Do you know your blood type?


Most Japanese know their blood type, but is it so for people from different countries?


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Most of my Aussie friends don’t know their blood type, saying “Most Australians don’t know their blood type!”. I’m not sure if it is true or not, but on the internet, there is information that only a few people know their blood type except for Japanese and South Korean.  


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Japan is overflowing with various information related to blood types, such as methods to lose weight based on blood types, the best matching blood types for couples, and personalities for people with blood type A. Does everyone have their blood type examined to make use of such information? Do they get to know it when donating their blood? Or do their parents have their children’s blood type checked and tell them just in case of an emergency? Well, I failed to find out how most Japanese get to know their blood type, even by asking Google.


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Approximately 40% of Japanese have a blood type A, 30% for O, 20% for B and 10% for AB. On top of the ABO blood type system, another classification is widely adopted: the Rh system. Only one out of 200 Japanese reportedly has an Rh-negative. Consequently, Japanese with AB-negative are as rare as approximately one out of 2000. On the other hand, people with Rh-negative are quite often come across in Western societies. Indeed, I have no Japanese friends with Rh-negative, but some Aussie mates with the blood type.   


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My blood type is O-positive, which can be transfused to anyone as long as they are Rh-positive, so I donate my blood at least once a year, wishing it becomes someone’s help. But, unfortunately, people with O-positive like me can only get a blood transfusion of exactly the same type…


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If you don’t know your blood type, it might be a good idea to go to donate your blood and have your blood type examined. You can find a blood donation car in front of major railway stations in urban areas such as Tokyo and Osaka. If you are not in a hurry, please donate your blood. There are also the Red Cross blood donation centres, where you can make an appointment for blood donation.