Is it possible to change a person's blood type?

Someone said that their blood type was B and now it's O.
Answers:
The most interesting question of the day, so I had to do some research. While I thought it was impossible because of the antigens present in blood types, this article seems to indicate that it can be done. That sure will relieve blood supply issues.

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UHH NO.

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This is not possible. It is possible, however, that he was mis-typed or he misunderstood what he was told.

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no your organs like your heart are only compatable with your certin like a only. but there is an exception people with blood type o can give blood to any one because its compatable with anything

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anything is possibleO is supposed to be compatible with all the other types so I suppose it is possible.

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if they changed their blood type they would be dead. It is not possible. He was probably just wrong

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yes, you would have to do it illegley, or some sort of blood replace ment.

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nope. ur body can't associate with any other blood group. for blood transfusion u have to look for the same blood type along with Rh factor %26 other stufs. O blood ttype person can b given if totally compatible. AB blood type person can accept almost any othar slighly varying blood types

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It is impossible. A person's blood type is determined by genetics. Red blood cells are continously produced, so even though a blood type B person have a blood transfusion of type O, his own body still produce type B blood, so he is still type B.
Theoretically, for a person to change his blood type, he has to change the DNA in all the cells in his body, or at least in all his bone marrow (where blood cells are produced)

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Well that someone lied to you.NO you can't change your blood and NO it's not possible..

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Actually, it **IS** possible for your bloodtype to change if you have had a bone marrow transplant.Your blood type is determined by antigens on your blood cells, which are made by your bone marrow. People who have received bone marrow transplants as part of the treatment for certain types of leukemia can sometimes be given bone marrow that produces blood of a different bloodtype. It turns out that the new bone marrow must match you HLA type, but not your bloodtype.That said, bone marrow transplants are generally a last resort for treating leukemia. They are long, danerous (around 20% of patients die), and very unpleasant to go through.

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By the information you have here it looks more like a clerical error. A person's blood type can change, there is only one possible way and that is by bone marrow transplant. This can be a real headache for a blood banker as the patients blood type changes trying to figure out what type to give if needed.

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